Unreal Engine Issues
Unreal Engine Issues
Particle Random Value is the same for all particles with a Niagara Mesh Renderer
UE - Rendering - Architecture - Niagara - Sep 28, 2026A material using the Particle Random Value node returns the same value for every particle drawn by a Niagara Mesh Renderer. Particle transforms are not affected, only the random value. This happens ...
Wobbling effect on meshes
UE - Rendering - Features - May 31, 2022Weird wobbling rendering artifact are generated on the surface of the Mesh located far from the origin. ...
Crash occurs when compiling in Editor after editing a C++ file
UE - Foundation - Cpp Tools - Hot Reload - Jan 5, 2021Crash seems inconsistent, doesn't seem to happen every time. You may have to change the variables and re-compile through the editor a few times to get it to trigger. The crash did occur for me when ...
Loading a blueprint that uses the GetOptions meta data causes an ensure
UE - Gameplay - May 6, 2020Loading a blueprint that uses the GetOptions meta data causes an ensure ...
Crash when reimporting SkeletalMesh with custom LOD
UE - Editor - Open File Formats - Import and Export - Oct 29, 2021In the case of "Reimport Base Mesh + LODs", there is no crash. ...
OnMovieClipFinished returns the incorrect movie name
Tools - Jun 29, 2017When OnMovieClipFinished is called, it will return the name of the movie clip that is about to be played rather than the clip that had just finished. Regression: Yes This did not occur in 4.15.3 B ...
Changing foliage quality during runtime crashes editor/game
UE - World Creation - Worldbuilding Tools - Foliage - Oct 25, 2017Editor will crash if a foliage type has Enable Scaling Density checked and user changes Engine Scalability Setting for Foliage during Runtime. Alternatively, if Foliage Quality is changed using a B ...
Custom Collision Preset Settings Not Saving on Foliage
UE - World Creation - Worldbuilding Tools - Foliage - Jun 25, 2018Custom collision presets will not be saved properly to foliage after closing and reopening the project. Additionally if you make changes to any collision preset in project settings, the foliage will ...
Physics replication is not working correctly and clients receive different results
UE - Simulation - Physics - Aug 9, 2018Physics replication is not working properly. The replicated physics are different than what is on the server. The user who reported this issue pointed out this line as well which seems to not do any ...
Malformed command sent to UAT if BuildCookRun command ends with a trailing slash ("\")
UE - Foundation - Cpp Tools - Feb 14, 2019Including a trailing slash ("\") at the end of a BuildCookRun command sent to UAT results in UAT receiving a malformed command. If the command ends with a slash, the resulting command that UAT recei ...