Unreal Engine Issues
Unreal Engine Issues
Editor crashes if an interface array variable is reset in the Detail's Pane
UE - Gameplay - Blueprint - Apr 27, 2016The editor will crash if an array of interfaces is reset using the "reset values" button (yellow arrow) in the Detail's Pane of the editor. Frequency: 4/4 Crashreporter: N/A Regression? (No), is ...
Placing a call to spawn a custom Actor in the game mode constructor instead of BeginPlay causes Editor to Crash
UE - Gameplay - Mar 1, 2016[Link Removed] In XCode, place a call to spawn a custom Actor in the game mode constructor instead of BeginPlay. This apparently causes the editor to get into an endless crash loop unless the Bui ...
Draw as Border is not limited to sprite area in UMG
UE - Editor - UI Systems - Apr 14, 2017UMG supports sprite as an image, but using this as source do not correctly cut sprite's region which limits border textures to be separated textures. If the Image has a material, size do not match ...
[CrashReport] UE4Editor_SlateCore!SWidget::ExecuteActiveTimers() [swidget.cpp:986]
UE - Rendering Architecture - Materials - Dec 15, 2017User comments:right mouse button in material editor made engine crash....becomes slow and crash....64gb ram, 2 xeon and gtx690....need to restart computer to everything works fine. need a solution t ...
Cannot (Easily) Change the Case of Folder Names in the World Outliner
Tools - Jul 11, 2016In the World Outliner, without the following workaround, you cannot simply change the case of a folder name from upper to lower case or vice versa. EXAMPLE: map -> Map = map WORKAROUND: Change "M ...
UE 5.4 - Specular/reflection disappears above 4096 resolution render
UE - Rendering Architecture - Aug 1, 2024After a viewport is more than 4096 pixels wide, Lumen's specular reflections buffer cuts its width off at 4096 pixels. It appears that the affected buffer is "Lumen.Reflections.ResolvedSpecularIndi ...
Crash when searching for a string with the same name as the collection
UE - Editor - Content Pipeline - Content Browser - Feb 28, 2025The editor crashes when creating a local collection of the same name by typing certain characters in the search box of the content browser. This does not reproduce in UE5.4 and is a regression in UE ...
Crash when displaying lumencards on map with many objects
UE - Graphics Features - Lumen - Aug 1, 2025There is a thread conflict between FRDGBuilder execution in Background Worker and LumenVisualizer's LumenCard add/delete process. When lumen cards are displayed in a scene with many objects, a crash ...
Rect Light not rendered correctly when using Virtual Texture as source texture
UE - Graphics Features - Aug 14, 2025Licensees have reported that this issue occurs when rendering from the command line: Rectangular lights with virtual textures do not render when you run the "Render (Remote)" button in the Editor, a ...
Adding a key frame to the curve editor in UMG adds multiple keyframes
UE - Editor - UI Systems - May 6, 2015When Right clicking and selecting add key frame to an animation on the curve editor in UMG there appears to be multiple keys being added to the timeline. ...