Unreal Engine Issues
Unreal Engine Issues
Ansel Wont Work if the Project is Still Open
UE - Graphics Features - May 22, 2019Ansel wont work if the same project is still open while running the packaged version. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6599617 ...
Instances Created From Merge Actor Have Corrupt Lightmaps
UE - Graphics Features - Jun 6, 2019Instances Created From Merge Actor Have Corrupt Lightmaps. Working as intended in 4.20 CL# 4369336 and 4.21 CL# 4753647 Found in 4.22 CL# 6574378 and 4.23 CL# 6842436 This is a regression. ...
Landscape No Longer Renders when Setting Max Desired Draw Distance Above 0
UE - World Creation - Worldbuilding Tools - World Composition - Jul 1, 2019Landscapes no longer renders when setting max desired draw distance above 0. Found in 4.21 CL# 4753647, 4.22 CL# 7053647, 4.23 CL# 7208101. 4.24 CL# 7210422 ...
Orientation Warp Node Missing from ABP_Manny BP After TPS C++ Project Restart
UE - Characters - Animation - May 10, 2022Occurs 3/3 times. Orientation Warp plugin is missing from ABP_Manny BP in the TPS C++ project after project restart. Regression does not occur: Animation Warp plugin is not available in //UE4/Rel ...
Improper include generated when C++ class is in a subdirectory
UE - Editor - Jun 7, 2022This is not a regression from 4.27.2, however, a similar issue was fixed in 4.26. Generating a C++ class that is in a subdirectory generates the #include "Subdirectory/Class.h" instead of #include ...
Crash when removing mesh and undoing in Character Blueprint
UE - Gameplay - Blueprint Editor - Aug 9, 2023When removing a mesh from a Character BP and undoing the engine will crash. This issue is occurring in //UE5/Release-5.3 @ CL 26560699 This issue is NOT occurring in //UE5/Release-5.2 @ CL 2600198 ...
Static Offset in IK Retargeter does not save position when restarting the editor
UE - CAPT - Retargeting - Sep 19, 2023When editing an IK retargeter, a static offset's value will get reverted to zero when UE is restarted. Tested in the following: //UE5-Release-5.3-CL-27405482 //UE5/Release-5.2-CL-26001984 ...
Capturing backtrace of another thread in engine built with clang raises access violation exception
UE - Core - Systems - Jan 11, 2024Engine built with Clang throws an exception when calling RtlVirtualUnwind with a different thread ID. Engines built with Microsoft compilers do not occur this problem. For example, if starting PI ...
UE5.6+ - Mutable - IDPrefix crash when combining Child Objects, Add to Mesh Component and Extend Mesh Section.
UE - Anim - Mutable - Jul 21, 2025So the issue seems to be a combination of Add To Mesh Component and Extend Mesh Section. I've tried this in Epic Launcher 5.6, 5.6 in-house modified engine as well as ue5-main 5.7 from git (editor ...
GetOverlappingComponents does not work on Mobile
UE - Simulation - Physics - Jun 13, 2016The GetOverlappingComponents node isn't working correctly on mobile devices. It seems like it may only not be registering components that are spawned at runtime, as it does change the number of over ...