Summary
UMassSignalSubsystem::SignalEntities() can be called from multiple threads, but
GetSignalDelegateByName() and Broadcast() are unsynchronized accesses.
PR： https://github.com/EpicGames/UnrealEngine/pull/15281
What Type of Bug are you experiencing?
Other
Steps to Reproduce
Intermittent bug
Expected Result
Not crash
Observed Result
Crash
Affects Versions
5.7
Platform(s)
Windows
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