Revert "Resolving the cursor jumping in the Editor bug (#2976)"

.changeset/tough-deers-rescue.md

@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus-editor": patch
+---
+
+Reverting Editor Cursor Bouncing Fix

packages/perseus-editor/src/editor.tsx

@@ -162,6 +162,7 @@ type State = {
 // eslint-disable-next-line react/no-unsafe
 class Editor extends React.Component<Props, State> {
     lastUserValue: string | null | undefined;
+    deferredChange: any | null | undefined;
     widgetIds: any | null | undefined;
 
     underlay = React.createRef<HTMLDivElement>();
@@ -250,6 +251,12 @@ class Editor extends React.Component<Props, State> {
         }
     }
 
+    componentWillUnmount() {
+        // TODO(jeff, CP-3128): Use Wonder Blocks Timing API.
+        // eslint-disable-next-line no-restricted-syntax
+        clearTimeout(this.deferredChange);
+    }
+
     getWidgetEditor(
         id: string,
         type: PerseusWidget["type"],
@@ -434,11 +441,17 @@ class Editor extends React.Component<Props, State> {
     handleChange: (e: React.SyntheticEvent<HTMLTextAreaElement>) => void = (
         e: React.SyntheticEvent<HTMLTextAreaElement>,
     ) => {
-        const newValue = e.currentTarget.value;
-        this.setState({textAreaValue: newValue});
-        if (newValue !== this.props.content) {
-            this.props.onChange({content: newValue});
-        }
+        // TODO(jeff, CP-3128): Use Wonder Blocks Timing API.
+        // eslint-disable-next-line no-restricted-syntax
+        clearTimeout(this.deferredChange);
+        this.setState({textAreaValue: e.currentTarget.value});
+        // TODO(jeff, CP-3128): Use Wonder Blocks Timing API.
+        // eslint-disable-next-line no-restricted-syntax
+        this.deferredChange = setTimeout(() => {
+            if (this.state.textAreaValue !== this.props.content) {
+                this.props.onChange({content: this.state.textAreaValue});
+            }
+        }, this.props.apiOptions.editorChangeDelay);
     };
 
     _handleKeyDown: (e: React.KeyboardEvent<HTMLTextAreaElement>) => void = (