The player is not getting component groups/events updating inside their file.

Partner Rank: 1
 (No work around)
 
Verification builds:
1.16.10056 +
 
Summary:
The player is not having component groups/events inside their file update, when you use /event or sending them via a component. It does not seem to add or remove component groups on the player. This breaks anything to do with updating player behaviours and running animations.

Impact:
It's blocking our next in-development map & our Holiday 2020 Promotion project. This also stops us running animations BP side of the pack from the player.
 
Repro Steps:

1. **Create the player with a component group and event
2. Use /event or a component you can call from like an environment sensor
3. The player will not add the component group.

 
Observed Results:
The player will not add/remove the component group from them.
 
Expected Results:
The player should have the the component group added/removed from it after being called to do so.

Notes:
We can privately provide a world to show this if requested