Unreal Engine Issues
Unreal Engine Issues
Editor Crashes when spawning a Physics enabled object inside another
UE - Simulation - Physics - Sep 22, 2017Editor Crashes when spawning a Physics enabled object inside another. Regression: Unknown Can Test in Main if requested. ...
Console command “showflag.rendering 0” causes crash
UE - Rendering Architecture - Jul 10, 2025A crash occurs when the console command “showflag.rendering 0” is executed. This does not occur in UE5.5, so it is a iassue in UE5.6. ...
[MRQ] Simulating in editor during runtime rendering causes an assertion to fail after rendering is done
UE - Graphics Features - Apr 19, 2022Simulating in editor during runtime rendering causes an assertion to fail after rendering is done. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did not occur there ...
[CrashReport] UE4Editor_Engine!CropRawTrack() [animsequence.cpp:1798]
OLD - Anim - Dec 14, 2018Comment from user in crash groupTried to delete frames in an animation ...
AutoCreateRefTerm does not provide a way to specify that a TArray property within a struct should have a default value created for it if none is provided
UE - Gameplay - Feb 9, 2018The current implementation of AutoCreateRefTerm does not allow for a default value to be automatically created for a TArray contained within a struct that is passed into a function as a parameter. I ...
Crash when trying to launch ShooterGame with -game
UE - Online - Jul 11, 2017Might be related to the changes in //UE4/Release-4.17 at CL 3527005. I was also able to repro this via PIE-Standalone Game in the editor. When I repro'd this with PIE-Standalone Game the Standalone ...
Regression - Nested scene component subobjects are no longer being registered when the owning scene component is added to an existing Actor instance as an instanced component.
UE - Gameplay - Components - Nov 16, 2016This is a regression that was introduced with changes made to address issues with native vs. non-native component registration at Blueprint construction time ([Link Removed]). Prior to those change ...
Editing and committing changes to a PackedLevelActor Blueprint results in a crash
UE - World Creation - Worldbuilding Tools - Level Instances - Apr 5, 2022Repro Ratio: 3/3 Regression was tested in //UE5/Release-5.0-EarlyAccess CL-16682836 since this is a new feature of UE5. The issue did happen ...
Editor 'Build All Levels' discards Volumetrics Lightmaps in persistent level
UE - Graphics Features - May 14, 2025Building the level or lightmaps can clear the volumetric lightmap. In 5.5, this requires you to perform a full build, or a lighting only build with a BSP brush in the scene. In 5.6, all level build ...
VR Mode - Landscape Mode - Flatten tool crash
UE - LD & Modeling - Terrain - Landscape - Sep 25, 2019Crash will occur when attempting to use Flatten tool on landscape while in VR Editor. Confirmed in 4.24 MAIN @ CL 9084132 Confirmed on Vive and Rift ...