Unreal Engine Issues
Unreal Engine Issues
Chaos Fields: LS_MasterField continuously creates components every frame and never cleans them up
UE - Runtime - Deformable - Mar 25, 2026While active and ticking, the built-in FS_MasterField actor instance continuously creates several new components every frame, which are never cleaned up until the actor is destroyed. This can happen ...
MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution
UE - Graphics Features - Sep 14, 2016When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...
Buffer Visualization for DecalMask is missing
UE - Graphics Features - Feb 29, 2016The Buffer Visualization for DecalMask is no longer an option. Also, when looking at the Buffer Visualization Overview the DecalMask slot has been removed. See attached image for comparison Worke ...
Adding "_API" specifier to FMovieSceneTrackEditor results in linker errors
UE - Anim - Sequencer - Feb 7, 2017Unable to add API specifier to FMovieSceneTrackEditor, results in compile errors (pasted in the callstack field) ...
Calling functions that have an implicit WorldContextObject parameter in a Blueprint function library will give a compile error about a missing __WorldContext pin
UE - Gameplay - Blueprint - May 21, 2015Calling functions that have an implicit WorldContextObject parameter (line trace, execute console command, etc) in a Blueprint function library will give a compile error about a missing __WorldConte ...
Can't PIE or Save: Editor gets into odd state when editing parameters.
Tools - Jul 20, 2016I've seen this happen in other areas of the editor as well: Data Table fields (floats) for example. Manually typing in numbers to fields seems less prone to this error; using spinners to drag value ...
Generating XCode project from .uproject fails
UE - Platform - Apple - Jun 10, 2016Using the option Services->Generate XCode Project fails to update the XCode solutuion. This prevents source files added to the project from the directory to show up in the editor. Regression: No - ...
Setting Automatically checkout on Asset Modification in the editor does not check out files
Tools - Nov 20, 2015When the checkbox for Automatically checkout on Asset Modification is set to true in the editor, updating files (blueprints, materials, etc) does not check them out automatically. REGRESSION Worki ...
DataAssets with a field called "Name" can cause multiple Name columns to appear in the content browser
UE - Editor - Content Pipeline - Content Browser - Jul 18, 2017A DataAsset with a FText property called "Name" will confuse the content browser, causing it to create a new column each time the folder containing the DataAsset is entered. This appears to be a cor ...
Mac - Content Browser menus are dismissed when using them while toasts are running
UE - Platform - Apple - Sep 30, 2017REGRESSION: Yes, this does not occur in 4.17.2 If the user is using any of the Content Browser menus while there's an active toast, the menu will suddenly be dismissed. It appears to get dismissed ...