Unreal Engine Issues
Unreal Engine Issues
Engine Crashes On Scene Close When An Actor Is Spawned With Templated FActorSpawnParameters
UE - Simulation - Physics - Mar 5, 2020When an actor is spawned with Spawn Parameters that are templated the engine crashes when closing a scene. This wasn't happening when there wasn't a physics constraint on the spawned blueprint. Thi ...
UE5 Main - Editor crashes when creating a Data Table
UE - Editor - Feb 14, 2022Doesn't occur in UE5 Release or UE4.Can't attach logs/crash information I'm encountering an RHI crash within UE5 Main at the moment. This issue seems to be caused by a commit from last year that ...
Animation viewports can cause debug print messages to be purged
UE - ACT Character - Control Rig - Jan 11, 2024A change was made a while back so that control rig debug print messages would be displayed in the animation editor preview windows. This is done via calling UEngine::DrawOnscreenDebugMessages from ...
[Sequencer MRQ] Spatialized audio is not heard in MRQ renderings
Per customer case: [25102237 | Case | Salesforce|https://epicgames.lightning.force.com/lightning/r/Case/500QP00001V41PqYAJ/view] Audio that uses an Attenuation to set Spatialized Audio (just positi ...
Match3 crashes on device after locking and unlocking the screen on iOS
Tools - Aug 23, 2016Aug 23 15:25:15 A6240 UnrealMatch3[987] <Warning>: Assertion failed: CommandEncoder.IsRenderPassDescriptorValid() [Link Removed] [Line: 700] Match3 does not resume after locking and unlocking the s ...
Linux editor windows are completely black
UE - Platform - Mobile - Apr 10, 2017All of the editor windows are completely black on the Linux machine with the exception of the splash screen. This occurs for the Unreal Project Browser, toast windows and game windows. The functio ...
Iterative Cook does not only cook new content from Unreal Frontend
UE - Foundation - Core - Cooker - Jun 14, 2018Using iterative cooking should only cause new or changed content to be cooked but in the Unreal Frontend, content is cooked every time, despite nothing being added or edited. Logs from two subseque ...
Rounding of conversion of anim length into frames add an empty frame to the animation
UE - Editor - Open File Formats - Import and Export - Feb 5, 2026cf. https://forums.unrealengine.com/t/gltf-import-bug-animations-have-an-entire-extra-frame-when-source-animation-is-slighly-above-target-length/2697309 The GLTF importer adds an extra frame to the ...
TPropertyValueIterator skips TMap values when KeyType is a UStruct
UE - Foundation - Core - May 7, 2018From https://udn.unrealengine.com/questions/431271/tpropertyvalueiterator-skips-tmap-values-when-keyt.html The property value iterator has logic where it tries to iterate over all properties in a s ...
iOS Remote Build fails with Date/Time set to Certain Locales
UE - Platform - Mobile - Jan 21, 2019Date/Time formats using commas instead of semicolons will cause iOS compile to fail. "LogPlayLevel: Error: ERROR: System.FormatException: Input string was not in a correct format." Similar Unk ...