Unreal Engine Issues
Unreal Engine Issues
Linux Vulkan editor crashes OOM on older graphics cards
UE - Graphics Features - Oct 19, 2018Vulkan editor is very crashy on older cards due to memory pressure. I have to switch to OpenGL to work on the unrelated bugs. I'm attaching the details of the particular failure I had (see VulkanMe ...
Non-ASCII fonts don't display in UMG
Tools - Nov 6, 2019When using a non-ASCII language in the editor text in UMG will not display correctly. Found in 4.23.1 CL#9631420 Reproduced in 4.24 CL#10053396, 4.25 Main CL#10050790 ...
Crash when load the levelinstance what is set "LevelBehavior=Standalone" in the stanadalone game
UE - World Creation - Worldbuilding Tools - Level Instances - Jul 16, 2024A crash occurs when LevelInstance with LevelBehavior set to "Standalone" is loaded in a standalone game. Specifically, when LevelInstance is deleted by moving outside the loading range of the worldp ...
Duplicating a map crashes the editor (Blueprint compile crash)
UE - Gameplay - Blueprint - Jan 5, 2015EDIT: Date: 1/21/2015 Adding the [Link Removed] Duplicating a map in the Content Browser crashes the editor. It does not matter if the map being duplicated is the currently open map or not. EDIT ...
TextRender components do not update until blueprint is saved and compiled
UE - Gameplay - Blueprint - Aug 25, 2015TextRender components do not update when text is changed on compile. The blueprint must be saved, closed, and re-opened for the change to take effect. ...
Root Motion interpolation is incorrect when use URO
UE - Anim - Runtime - Aug 3, 2018According to Licensee's report, Root motion is incorrect when use URO. I Investigated, in the case of "Montages Only" become TrailMode in URO. Normally Animation Interpolation has implementation, ...
Multiple Timeline Tracks disappear when first track is collapsed
Tools - Mar 6, 2017When collapsing a timeline track, if there are over 5 tracks below it, some will disappear. This is a closer look at but UE-18550 Workaround Simply scroll on the timeline tracks to repopulate the ...
Editor.Plugins.Tools.Modeling.EditorMode.ExtrudePolygons.* test cases fail in headless mode due to stylus error log.
UE - Graphics Tools - Modeling Tools - Jan 15, 2025Hello! In UE 5.5 Preview, new stylus code was introduced, which can cause a test failure in an unrelated test suite, Editor.Plugins.Tools.Modeling.EditorMode.ExtrudePolygons.*. The test indirectly ...
Mover character flickers downward while crouched and moving every so often
UE - Gameplay - Player Movement - Mover - May 8, 2025Repro Rate 5/5 Packaged onWindows - 10 - Enterprise - L3864 Processor: AMD Ryzen Threadripper PRO 3975WX 32-Cores 3.50 GHz RAM: 128 GB GPU: NVIDIA GeForce RTX 3080 GPU Driver Version: 572.83 ...
Collision Boxes not set properly when using negative values
UE - Simulation - Physics - May 15, 2015When using multiple collision boxes with the mesh scaled in a negative axis while the collision boxes are rotated that the rotation is not taken into account when using the negative scale. ...