Silverfish monster blocks not working

It only let me select 1.1.0.55 in the tracker, but it's the current release build that is effected.

Summary:
Silverfish monster blocks that are placed in the world do not eject silverfish when you harm a silverfish in the vicinity, instead they turn to the stone version of the monster block.

Impact:
Looking to use this for a mechanic for a map we had targeted for submission by Aug 3rd

Repro Steps:
1. Create a world
2. Place down any type of "Monster Egg"
3. /summon silverfish
4. Punch the silverfish
5. Watch as the Monster Eggs convert to "Stone Monster Egg" instead of spawning a silverfish

Observed results:
Blocks change to stone Monster Eggs

Expected results:
The blocks break and a silverfish emerges at that location.

Videos attached:
https://youtu.be/ahbQAYTOaNo