Changing "bool" actor property values not synced to the client triggers assert failure

Partner Rank: 2 (Important)

Partner Team Reporting: Oreville Studios

Verification builds: 1.19.51.01_rc0 and 1.19.60.24_rc0

Summary:

Whenever the value of an actor property with the type of "bool" is updated in entity events without being synced to the client, Minecraft will throw the following assert failure:

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Assert Failure - ctrl+C to copy this message to the clipboard!
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Assertion failed: Sending a SetActorDataPacket that is completely empty!
Condition is false: !isEmpty()
Function: SetActorDataPacket::SetActorDataPacket in D:\a_work\2\s\handheld\src\common\network\packet\SetActorDataPacket.cpp @ 21

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OK   
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Boolean actor properties that are synced to the client do not trigger the assert failure.

 
Impact:

This impacts content in development. We are wanting to be able to use true/false properties exclusively in the behavior pack/server in an easy to read way. This bug prevents us from doing so because this will be a blocking issue during content review and certification. Additionally, it is favorable to avoid syncing actor properties to the client where possible as to avoid sending unneeded packets.

Repro Steps:

1. Enable "Assertions show a modal dialog" in the Debug settings (dev client required).
2. Download, install, and enter the attached world with the actor property testing behavior pack applied.
3. Run either of the following commands to update a boolean actor property that is not synced to the client: /event entity @s test:bool_no_client_sync_set_true OR /event entity @s test:bool_no_client_sync_set_false.
4. Observe the assert failure.

Observed Results:

Assert failure triggers.

Expected Results:

Assert failure does not trigger. The expected result can be replicated by running /event entity @s test:bool_client_sync_set_true OR /event entity @s test:bool_client_sync_set_false as these actor properties are synced to the client.

Screenshots/Videos attached: No

Regression Builds: Unknown

Notes: Uploaded reprod world and attached to this bug report.