Unreal Engine Issues
Unreal Engine Issues
QABP_Containers is dirtied when opened
UE - Gameplay - Blueprint Compiler - Jul 29, 2017REGRESSION: Yes, does not occur in 4.16.3 In QAGame, the blueprint QABP_Containers is dirtied (needs to be compiled and saved) when the user opens it. This occurs every time the editor is restarte ...
[CrashReport] Mac crash - FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState
UE - Rendering Architecture - RHI - Aug 25, 2017This is an infrequent Mac crash that has been affecting users since at least 4.15. Users have not provided any descriptions of their actions when the crash occurred. The callstack is similar to the ...
Move To Location or Actor Not Working if Location is Outside of Navmesh
UE - AI - Oct 17, 2017Move To Location or Actor will always fail if the target location is outside of the Navmesh, even if Use Pathfinding is disabled. Found in 4.18 P4 CL# 3685441. Reproduced in 4.17.2 CL# 3658906 & 4. ...
VREditor: Right eye freezes when looking at a selected object with temporal upsampling enabled
UE - Platform - XR - Feb 27, 2018The right eye of the HMD freezes when looking at an object that has been selected in VR Mode with Temporal Upsampling on. Happens with both Vive and Oculus. I did not see this when playing in VR. I ...
Planar reflections move up and down while reflective surface rotates
UE - Graphics Features - May 24, 2018Whenever you have an actor on top of a reflective surface while its moving the reflection will display inaccurately as if the object is moving away or toward the reflective surface. Found in 4.19 C ...
Copying an instance of a blueprint actor that has an extra, non-default element in an array does not copy that extra element
UE - Gameplay - Blueprint - Jul 16, 2018Copying a blueprint instance that has an array does not copy any elements added to that array directly on the instance and only copies the blueprint's default array elements This worked in 4.13 and ...
IsTraceHandleValid with default FTraceHandles has unexpected behavior on the first frame
UE - Simulation - Physics - Sep 18, 2018Because both FWorldAsyncTraceState's CurrentFrame and FTraceHandle are default initialized to 0, on the first frame, if a new Asnc Trace starts all default FTraceHandles will reference the same (now ...
Using a Blutility to modify an Actor in a Streaming Level doesn't make it dirty
UE - Gameplay - Oct 11, 2018Using a Blutility to modify an Actor in a Streaming Level doesn't make it dirty and prompt it to be saved. This was reproduced and tested in 4.19.2 (CL-4033788), 4.20.3 (CL-4369336), 4.21 (CL-44358 ...
UWorld::CleanupWorld causes issues with sublevels when changing maps after building lighting
Tools - Mar 1, 2019A licensee has reported that UWorld::CleanupWorld is causing issues with assets in Sublevels if you build lighting on the parent level, save all of the maps, and then change to another level. The as ...
Sequential Level Loading in Python causes Crash
UE - Editor - Workflow Systems - Apr 16, 2019Loading all the levels selected in the Content Browser and running the aforementioned Python script causes the editor to crash Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22 (CL - 5 ...