Unreal Engine Issues
Unreal Engine Issues
Disabling bLerpUVs in Nanite Settings of Static Mesh causes texture warping in clusters
UE - Rendering - Graphics Features - Nanite - Jan 21, 2025The licensee has identified a potential fix by changing if( Settings.bLerpUVs ) to if( Settings.bLerpUVs || UVIndex == 0 ) On line 389 of NaniteBuilder\Private\Cluster.cpp in UE 5.5 ...
Copy-pasting custom property nodes (ControRig etc.) results in invalid bindings, perf issues
UE - CAPT - Control Rig - Jul 28, 2025From this UDN: [Link Removed] Suggested fix:Override PostPasteNode to perform the GUID update andAdd validation on load to strip 'invalid' copies that do not correspond to a valid pin input ...
Moving a 3D widget that has been placed in the scene will cause a crash
UE - Editor - UI Systems - Jan 18, 2016If a user places a 3d widget in to the level it will cause a crash when moved with the movement arrows. ...
Compiling blueprint with anim bp crashes editor in MathExpr exec
UE - Gameplay - Blueprint - Jan 30, 2016Compiling a player character blueprint that is tied to an anim bp crashes the editor. Frequency: 2/2 Crashreporter: N/A ...
Switch Skeletal Mesh node crashes the editor if the blueprint is compiled.
OLD - Anim - Feb 8, 2016Switch Skeletal Mesh node crashes the editor if the blueprint is compiled after changing the mesh being called on node. Frequency: 3/3 CrashReporter: N/A NOTE: tied to [Link Removed], however on ...
Sculpting landscape with foliage painted crashes editor
UE - World Creation - Worldbuilding Tools - Foliage - Apr 4, 2016sculpting landscape with foliage painted crashes editor Frequency 3/3 Crashreporter [Link Removed] Logs [Link Removed] ...
Geometry Material Alignment not functioning in 4.8
Tools - Jun 15, 2015Material Alignment on BSPs are not functioning in 4.8.0 Release. This is a regression from 4.7.6. The issue does appear to be fixed and functional in 4.9 (Promotable-CL-2581018) ...
GameMode::StartNewPlayer calls RestartPlayer() without checking PlayerCanRestart()
UE - Gameplay - Nov 11, 2015Bug report from UDN thread. https://udn.unrealengine.com/questions/266937/gamemodestartnewplayer-calls-restartplayer-without.html#answer-268579 His point seems sound, we should fix it. ...
Text/value is not highlighted when selecting slider fields in details
UE - Editor - UI Systems - Slate - Apr 22, 2016Text/value is not highlighted when selecting slider fields in details This is extremely irritating in cascade and basically breaks usability. Does not occur in 4.11 Tags: Scrub Scrubbing value t ...
Custom Event functions cannot be called in sublevel event graphs if sublevel is not visible
UE - Gameplay - Blueprint - Aug 1, 2016Calling a custom event in a sublevel blueprint of a sublevel that is currently hidden will not show the custom event's function in the context menu. Regression (no) issue (does) occur in 4.11.2 ...