Unreal Engine Issues
Unreal Engine Issues
Changing ISM/HISM collision response at runtime does not update the collision properly.
UE - World Creation - Worldbuilding Tools - World Composition - May 8, 2019Changing ISM/HISM collision response at runtime does not update the collision properly. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6063286, 4.23 CL#6368684 ...
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 - Anim - Gameplay - 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 - Workflow Systems - 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 - Anim - Rigging - 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 - CoreTech - 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 ...