Token Eternal Sword becomes a card in play after jumping onto another creature

[Similacrest]

Describe the bug
When a token Eternal Sword effect jumps onto another creature, it is turned into a regular Eternal Sword enchantment. After it is destroyed, it gets into a players deck as a token enchantment scroll
To Reproduce

1. Create a custom match:
   difficulty(Easy); buffUnitCreated(P1, Eternal Sword);
2. Get 2 creatures in play
3. Destroy your creature
4. Observe that second Eternal Sword on other creature is displayed as Enchantment.
5. Destroy the second creature
6. Observe that the count of (library + graveyard) increased.
7. Cycle through the deck until you get the Token Enchantment in your hand.

Expected behavior
The library+graveyard count shouldn't increase, and Token Enchantment should not be showed in hand. Eternal Sword should be displayed as Effect after jumping, not Enchantment.

Screenshots
Screenshot (note how i have 55 scrolls in play after starting with 50).

Server or Client?
Server

Additional context
This was discovered via a Daily Medium trial on 16.07.2018. Also might need to investigate Infectious Blight?