Unreal Engine Issues
Unreal Engine Issues
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 ...
Linux - Crash when moving/turning the viewport camera in project that contains hair
UE - Graphics Features - Feb 2, 2021I've attached the project log, crashreport, and crash info to this ticket. This issue only appears to be happening on Linux (On both Nvidia/AMD cards) and does not happen when the hair is disabled i ...
Crash in Persona when adding Notifies
OLD - Anim - Apr 14, 2015REOPENED NOTES: Crash Reporter: [Link Removed] Test Project: [Link Removed] Open project and press Play: Editor will crash. User reports this being due to sequential animations not being the sam ...
Static code functions cause associated blueprints to not compile after a hot reload
UE - Foundation - Cpp Tools - Hot Reload - Oct 14, 2016If a function inside a BlueprintFunctionLibrary class is declared as static, instances of the function node inside blueprints cause the blueprint to not save after a hot reload. This does not affec ...
Second Animation Sample added to AimOffset or Blendspace swaps with the first sample
OLD - Anim - Oct 3, 2016Second Animation Sample added to AimOffset or Blendspace swaps with the first sample Note: After adding a 3rd sample, they switch back to the correct position. Regression: Sort of. In previous ...
Subclass disappears from class variable drop-down on re-open
UE - Gameplay - Blueprint - Mar 13, 2017Subclass disappears from class variable drop-down upon reopening the project. There is a workaround for the issue but it is strange in nature. Opening the level blueprint and adding the node in scre ...
Construction script not updating HISM array count
UE - Gameplay - Blueprint - Mar 27, 2017Construction script not updating HISM array count, even when new elements are adding inside of the level. Regression: Issue occurs in 4.15.1 of the binary build Using the same repro steps provid ...
Black artifacts when navigating viewport
UE - Graphics Features - Apr 18, 2017When navigating the viewport, placed actors can leave a "black shadow" as the camera viewpoint changes. The artifacting remains until "Game view" or wireframe mode is activated. This only occurs i ...
Thumbstick clicks do not register on Linux
UE - Platform - Linux - Jun 6, 2017The "Left Thumbstick Button" and "Right Thumbstick Button" events on Linux do not trigger with the thumbstick is clicked. Testing all gamepad input, clicking the thumbstick in appears to call the L ...
Drag and Drop Import option allows folders with space in name
UE - Editor - Content Pipeline - Import and Export - Jul 7, 2017By using the drag and drop import feature, users can import files that contain spaces in the name. This causes an error in the editor where files inside it cannot save because of the name. Renaming ...