Multiple diff editors for the same change

Type: Bug

1) from chat delegate to a task to the cloud agent
2) let the cloud agent finish
3) in chat open the PR and then the session
-> you get an editor with the chat icon
4) ensure editor is not in preview mode
5) in the agent sessions view, open the same session
-> you get a second editor with a cloud agent icon and a different title
6) Open the changes you see in the editor you got in step 5
7) ensure editor is not in preview mode
8) Open the changes you see in the editor you got in step 3
9) ensure editor is not in preview mode
10) Choose "show changed" from the drop down in the PR editor

You now have three editors for the same changes.

https://share.cleanshot.com/dR8MLTsJ

Extension version: 0.34.2025111302
VS Code version: Code - Insiders 1.107.0-insider (769ef65cd62212cde4db47c538acfea3063f1277, 2025-11-13T14:43:43.333Z)
OS version: Darwin arm64 24.6.0
Modes:

<details><summary>Prompt Details</summary>
<pre>
Trace: Creating remote URIs for cli/src/util/Frontmatter.ts
Trace: DiffEntry -> original='copilot-pr:/cli/src/util/Frontmatter.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FFrontmatter.ts%22%7D' modified='copilot-pr:/cli/src/util/Frontmatter.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FFrontmatter.ts%22%7D' (+15 -0)
Trace: Creating remote URIs for cli/src/util/IssueMetaData.ts
Trace: DiffEntry -> original='copilot-pr:/cli/src/util/IssueMetaData.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FIssueMetaData.ts%22%7D' modified='copilot-pr:/cli/src/util/IssueMetaData.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FIssueMetaData.ts%22%7D' (+32 -4)
Trace: Creating remote URIs for cli/tests/constructIssueMetaData.test.ts
Trace: DiffEntry -> original='copilot-pr:/cli/tests/constructIssueMetaData.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Ftests%2FconstructIssueMetaData.test.ts%22%7D' modified='copilot-pr:/cli/tests/constructIssueMetaData.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Ftests%2FconstructIssueMetaData.test.ts%22%7D' (+57 -0)
Trace: Creating remote URIs for cli/tests/validatePlanContent.test.ts
Trace: DiffEntry -> original='copilot-pr:/cli/tests/validatePlanContent.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Ftests%2FvalidatePlanContent.test.ts%22%7D' modified='copilot-pr:/cli/tests/validatePlanContent.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Ftests%2FvalidatePlanContent.test.ts%22%7D' (+4 -3)
Debug: [GitHubAPI] Fetch pull request by global ID PR_kwDOQFCeY86zJ5tW
Debug: [RateLimit] GraphQL rate limit remaining: 5000, query: 
		query GetPullRequestGlobal($globalId: ID!) {
			node(id: $globalId) {
				... on PullRequest {
					number
					id
					fullDatabaseId
					headRefOid
					baseRefOid
					title
					state
					url
					createdAt
					updatedAt
					additions
					deletions
					files {
						totalCount
					}
					author {
						login
					}
					repository {
						owner {
							login
						}
						name
					}
					body
				}
			}
		}
	
Debug: [GitHubAPI] Fetch pull request by global ID PR_kwDOQFCeY86zJ5tW
Debug: [RateLimit] GraphQL rate limit remaining: 5000, query: 
		query GetPullRequestGlobal($globalId: ID!) {
			node(id: $globalId) {
				... on PullRequest {
					number
					id
					fullDatabaseId
					headRefOid
					baseRefOid
					title
					state
					url
					createdAt
					updatedAt
					additions
					deletions
					files {
						totalCount
					}
					author {
						login
					}
					repository {
						owner {
							login
						}
						name
					}
					body
				}
			}
		}
	
Warning: [RateLimit] REST rate limit remaining: 0, agents/sessions/resource/pull/3005717334
Warning: [RateLimit] REST rate limit remaining: 0, agents/sessions/eed57be1-7d57-4633-b647-9e09d6bfb9fc/logs
Warning: [RateLimit] REST rate limit remaining: 0, agents/swe/v1/jobs/kieferrm/plan-tooling/session/eed57be1-7d57-4633-b647-9e09d6bfb9fc
Trace: Getting file changes for PR #23
Trace: Fetching PR files from kieferrm/plan-tooling for PR #23
Debug: [RateLimit] REST rate limit remaining: 14848, repos/kieferrm/plan-tooling/pulls/23/files
Trace: Got 4 files from API
Trace: Creating remote URIs for cli/src/util/Frontmatter.ts
Trace: DiffEntry -> original='copilot-pr:/cli/src/util/Frontmatter.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FFrontmatter.ts%22%7D' modified='copilot-pr:/cli/src/util/Frontmatter.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FFrontmatter.ts%22%7D' (+15 -0)
Trace: Creating remote URIs for cli/src/util/IssueMetaData.ts
Trace: DiffEntry -> original='copilot-pr:/cli/src/util/IssueMetaData.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FIssueMetaData.ts%22%7D' modified='copilot-pr:/cli/src/util/IssueMetaData.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Fsrc%2Futil%2FIssueMetaData.ts%22%7D' (+32 -4)
Trace: Creating remote URIs for cli/tests/constructIssueMetaData.test.ts
Trace: DiffEntry -> original='copilot-pr:/cli/tests/constructIssueMetaData.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Ftests%2FconstructIssueMetaData.test.ts%22%7D' modified='copilot-pr:/cli/tests/constructIssueMetaData.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Ftests%2FconstructIssueMetaData.test.ts%22%7D' (+57 -0)
Trace: Creating remote URIs for cli/tests/validatePlanContent.test.ts
Trace: DiffEntry -> original='copilot-pr:/cli/tests/validatePlanContent.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%222bb58ad899b3852805d8df9d5f5d52196644de51%22%2C%22isBase%22%3Atrue%2C%22fileName%22%3A%22cli%2Ftests%2FvalidatePlanContent.test.ts%22%7D' modified='copilot-pr:/cli/tests/validatePlanContent.test.ts?%7B%22owner%22%3A%22kieferrm%22%2C%22repo%22%3A%22plan-tooling%22%2C%22prNumber%22%3A23%2C%22commitSha%22%3A%22e59d6e75b096738fa1254005b3d0b93f02b93802%22%2C%22isBase%22%3Afalse%2C%22fileName%22%3A%22cli%2Ftests%2FvalidatePlanContent.test.ts%22%7D' (+4 -3)
Debug: [GitHubAPI] Fetch pull request by global ID PR_kwDOQFCeY86zJ5tW
Debug: [RateLimit] GraphQL rate limit remaining: 5000, query: 
		query GetPullRequestGlobal($globalId: ID!) {
			node(id: $globalId) {
				... on PullRequest {
					number
					id
					fullDatabaseId
					headRefOid
					baseRefOid
					title
					state
					url
					createdAt
					updatedAt
					additions
					deletions
					files {
						totalCount
					}
					author {
						login
					}
					repository {
						owner {
							login
						}
						name
					}
					body
				}
			}
		}
	
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Trace: [NES][Triggerer][onDidChangeTextEditorSelection] created
Trace: [NES][Triggerer][onDidChangeTextEditorSelection] created
Trace: [NES][Triggerer][onDidChangeTextEditorSelection] created
Trace: [NES][Triggerer][onDidChangeTextEditorSelection] created
Trace: [NES][Triggerer][onDidChangeTextEditorSelection] created
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
</pre>
</details>
<details><summary>Request IDs</summary>
<pre>

</pre>
</details><details>
<summary>System Info</summary>

|Item|Value|
|---|---|
|CPUs|Apple M4 (10 x 2400)|
|GPU Status|2d_canvas: enabled direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: enabled_on trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off|
|Load (avg)|3, 3, 3|
|Memory (System)|32.00GB (0.58GB free)|
|Process Argv|--enable-proposed-api lszomoru.lszomoru-proposed-api-sample --enable-proposed-api donjayamanne.kusto --crash-reporter-id ef10dfea-3602-4c74-ba1a-109ce7da7825|
|Screen Reader|no|
|VM|0%|
</details><details>
<summary>A/B Experiments</summary>

```
vsliv368cf:30146710
pythonvspyt551cf:31249598
nativeloc1:31118317
dwcopilot:31158714
dwoutputs:31242946
copilot_t_ci:31333650
g012b348:31231168
6gi0g917:31259950
pythonrdcb7:31268811
pythonpcpt1:31399616
6518g693:31302842
6abeh943:31336334
envsactivate1:31349248
editstats-enabled:31346256
aa_c:31379597
t1:31417262
c12345:31413568
cloudbuttont:31366566
aihoversummaries_t:31413033
todos-1:31405333
qwen_all_req:31396049
3efgi100_wstrepl:31403338
trigger-command-fix:31379601
auto_model_enabled:31396818
use-responses-api:31390341
sonnet_45_3e700918:31415506
ddidt:31398484
je187915:31401257
f1721337:31405248
afag3459:31405336
disable_auto_fix_gb0j8799:31411651
agentic_ask_h7d75428:31406124
rai-treatment:31417524
c0g8c232:31418508
copilot-nes-oct-t:31413017
metis_rerank_treatment1:31411021
ff8f5884:31411053
cmp-ext-treat:31412886
none:31413573
chatvisible:31417128
expandedtokens:31418009
inlinechat_v2_hd992725:31418437

```

</details>

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Multiple diff editors for the same change #277192

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Item	Value
CPUs	Apple M4 (10 x 2400)
GPU Status	2d_canvas: enabled direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: enabled_on trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	3, 3, 3
Memory (System)	32.00GB (0.58GB free)
Process Argv	--enable-proposed-api lszomoru.lszomoru-proposed-api-sample --enable-proposed-api donjayamanne.kusto --crash-reporter-id ef10dfea-3602-4c74-ba1a-109ce7da7825
Screen Reader	no
VM	0%

Multiple diff editors for the same change #277192

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