Unreal Engine Issues
Unreal Engine Issues
Niagara preview viewport and timeline are locked to 30fps
UE - Niagara - Aug 10, 2020The Niagara preview viewport seems to be fixed at a 30fps update time, which makes it difficult to fine-tune short lifetime FX. It would be good to either have options for viewport max fps, or for s ...
[AI] UE_MT_SCOPED_READ_ACCESS(NavElementAccessDetector) Fails in editor on fresh sync
UE - AI - Navigation - Jan 27, 2025Licensees have reported failed multi-thread access code for NavElementAccessDetector in complex levels that have not finished compilation of their static meshes. The eventual failed check is inside ...
Wolrd Partition Foliage Builder - Fails to build with multiple external actor folders.
UE - World Creation - Worldbuilding Tools - World Partition - Apr 1, 2025Hello, We are building a world with world partition & a lot of nanite foliage. We want to modify out Foliage Instance grid size via the commandlet. [Link Removed] Even in a new empty level the c ...
Cannot resize comment box when new comment is created on top
UE - Rendering Architecture - Materials - Apr 27, 2017Cannot resize comment box when a new comment is created on top. The resizing affects the bottom right corner. This issue is dependent on how the comment is added if comment 1 is highlighted and a ne ...
KiteDemo: DestroyActor Warning when Saving - Height_x3_y2_C_1
UE - World Creation - Worldbuilding Tools - World Composition - May 4, 2017While testing in KiteDemo - //UE4/Release-4.16 CL 3420042 in Binary – When the editor autosaved I noticed a warning occurred in the output log. – Issue occurs during any Save operation. User can use ...
Skylight has too much influence on Subsurface Scattering
UE - Graphics Features - May 9, 2017Users on the AnswerHub are reporting that Skylights have too much effect on Subsurface Scattering. The argument here seems to be Movable Skylights versus Static/Stationary and their results regardi ...
Unable to Save or Close Editor after Copying .FBX to Content Folder via Project Directory
Tools - Jul 5, 2017The editor is not allowing users to save or close a project after an .FBX file has been copied to the project's Content directory and allowing the Content Browser to discover the change in source fi ...
Packaging a runtime plugin in a Blueprint project causes some Editor files to be deleted
UE - Foundation - Cpp Tools - Oct 22, 2018Attempting to package a runtime plugin (does not occur with a Development plugin) in a Blueprint project fails in 4.21 Preview 2. This also causes some Editor files to be deleted, including the Modu ...
Simulating physics overrides the ability to move Skeletal Mesh Actors in Editor after moving a child component
UE - Simulation - Physics - Jun 18, 2019Found in 4.22 CL#6574378 Reproduced in 4.21 CL#4753647, 4.24 Main CL#7062442 May be similar to [Link Removed], which was reported fixed in 4.13 The following warning is spammed when trying to mov ...
Duplicating functions doesn't reset the GUIDs of local variables.
UE - Gameplay - Jun 15, 2023This is actually a bug with function duplication via UEdGraphSchema_K2::DuplicateGraph. After a function graph is duplicated, the function entry node still retains the same GUIDs for its local vari ...