5.3 Editor Freezes after pressing Stop on simulating game / play in editor viewport

Development Programming & Scripting
1

I just updated my project from 5.1 to 5.3, When I play in editor or simulate game and press Stop, editor just freezes, no error logs. Packaged build works fine.

Last lines from .log file when editor freezes:

LogWorld: UWorld::CleanupWorld for NameOfMap, bSessionEnded=true, bCleanupResources=true
LogSlate: InvalidateAllWidgets triggered. All widgets were invalidated
LogPlayLevel: Display: Shutting down PIE online subsystems
LogSlate: InvalidateAllWidgets triggered. All widgets were invalidated
LogSlate: Updating window title bar state: overlay mode, drag disabled, window buttons hidden, title bar hidden
LogAudioMixer: Deinitializing Audio Bus Subsystem for audio device with ID 5
LogAudioMixer: FMixerPlatformXAudio2::StopAudioStream() called. InstanceID=5
LogAudioMixer: FMixerPlatformXAudio2::StopAudioStream() called. InstanceID=5

Freeze only happens on my main map of the project, if I try to simulate / play other maps, stop works normally without freeze.

Last lines from other maps log, when Stop works normally:

LogAudioMixer: FMixerPlatformXAudio2::StopAudioStream() called. InstanceID=2
LogAudioMixer: FMixerPlatformXAudio2::StopAudioStream() called. InstanceID=2
LogUObjectHash: Compacting FUObjectHashTables data took 1.80ms
LogPlayLevel: Display: Destroying online subsystem :Context_1

Any idea what could cause this?