Unreal Engine Issues
Unreal Engine Issues
r.GTSyncType 2 console command causes incorrect frame rate display on Windows platform
UE - Rendering Architecture - RHI - Feb 6, 2023The FRHIFrameFlipTrackingRunnable thread is not initialized on Windows, so RHIGetFrameRate always returns zero. As a workaround, remove the code added by CalculateFPSTimings for Windows platform, a ...
Custom data update crash - invalid memory when removing an instance from a UHierarchicalInstancedStaticMeshComponent
UE - World Creation - Worldbuilding Tools - HLOD - May 3, 2022This is a race condition, did not crash with -onethread. Attached the collected threaded callstacks, although they look misaligned. Licensee has provided a suggested fix. ...
Shadows render incorrectly on the border of two landscapes
UE - Graphics Tools - Terrain - Landscape - Jan 4, 2023Regression: Tested in UE5/Release-5.0, issue does not occur so regression is yes This issue appears on whichever side of the first landscape the second landscape is adjacent to. Moving the Directio ...
Crash during .zfprj import when Feature detection quality is set to High and Use mosaic images as feature source is set to Yes
RS - Alignment - Dec 19, 2025Found in 2.0.0.118621 (R200). It appears that the combination of Feature detection - High and Use mosaic images as feature source during .zfprj LiDAR import - Yes. causes a crash. Outcome: RS ...
Launch crashes on Android if device has Wifi disconnected
UE - Platform - Mobile - Mar 10, 2016Launch On crashes on a Android devices if networking is disabled. This used to work and should not crash. ...
Cannot Include VoiceInterface.h Without First Including OnlineSubsystem.h
UE - Networking - Nov 30, 2016Including VoiceInterface.h causes compiling to fail until you include OnlineSubsystem.h in the same file. This is not expected because VoiceInterface.h is part of the OnlineSubsystem module which ...
Gear VR Touchpad input broken
UE - Platform - XR - Jul 27, 2018Gear VR Touchpad input no longer functioning in 4.20 Noticed this appearing in 4.20 logs from device (did not appear in 4.19 logs): LogOcInput: Get touchpad main with data 0.000000 0.000000 Also t ...
virtual texture lightmap crash due to pixel format r8Unorm_srgb in MacEditor
UE - Rendering Architecture - RHI - Mar 4, 2021Currently r8Unorm_srgb is required by virtual texture lightmap, and the Metal RHI simply forbids r8Unorm_srgb on Mac platform. Since the latest MacOS 11.0+ have the support of r8Unorm_srgb, we shoul ...
Game window renders transparent when launched with -game -log commands on Mac
UE - Platform - Apple - Oct 31, 2016This is only occurring on Mac and only in OSX 10.12. This is also a regression from 4.13 Right clicking in the dock, Show all windows, and selecting the game window does NOT fix the issue. Runnin ...
Changing line thinkness causes line to not be rendered
UE - Graphics Features - Apr 27, 2017When drawing a canvas line item to a render target, changing the thickness of the line to anything other than 0 causes the line to not be rendered if the associated material's blend mode is set to T ...