Unreal Engine Issues
Unreal Engine Issues
Deadlock in UAnimationSequencerDataModel::Evaluate where FScopeLock Lock(&EvaluationLock) blocks execution indefinitely
UE - Anim - Nov 4, 2025When both the Sequencer Editor and an Animation Curve Editor are open for the same animation asset, the editor freezes completely upon editing the curve. Analysis indicates that the freeze is caus ...
Slight delay when switching between UMG buttons on Mac
UE - Editor - UI Systems - Dec 30, 2014There is a slight delay when clicking between two different UMG buttons on Mac. Tested on OSX 10.10.1. There also appears to be a flicker on the Menu Bar. ...
Scene Capture 2D causes Android to Crash
UE - Platform - Mobile - Sep 15, 2015Scene Capture 2D causes the app to crash on Android in ETC2. I checked iPhone and I did not receive a crash. ...
NavModifierComponent doesn't work well with dynamic owner actors
UE - AI - Mar 12, 2015When a raw NavModifierComponent gets added to a character it cuts a hole in the navmesh (as expected) but doesn't update the location with character's movement. And it should. ...
Get All Actors of Class is failing to report at Event Begin Play in a streamed level
UE - Gameplay - Sep 3, 2015Get All Actors of Class is failing to report at Event Begin Play in a streamed level. Test project attached. This is a regression: did NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2678 ...
Packaged Game Ensure Crash when GameInstance working with Async loading thread
UE - Foundation - Core - Jul 23, 2019In Engine 4.23 Preview, when AsyncLoadingThread is enabled and GameInstance is loaded from a Blueprint, the Engine will crash. ...
UMG Editor Will Compile Incorrect Node And Crash When Called During Runtime
UE - Editor - UI Systems - Dec 26, 2019The UMG editor will compile as if the blueprints is valid if you make "Get Text" node from a TextBlock variable, delete it and create a EditableText variable with the same name. When running a scene ...
While renaming a variable in the Details panel, clicking another variable will rename it instead
UE - Gameplay - Blueprint - Feb 11, 2015While renaming a variable in the Details panel, clicking another variable will rename it instead. ...
Crash Occurs When Clicking Off of Color Picker in Data Table
Tools - Jun 29, 2016When using an FLinearColor variable in a data table and editing it using the color picker, clicking anywhere off of the color picker window will cause the editor to crash. Error Message: Assertio ...
[Audio Capture] - Editor crashes when activating an Audio Capture component when there are no active input or output devices avilable
UE - Audio - Aug 12, 2022If a device has no available input or output devices, activating an Audio Capture component will cause the device to crash. Occurs in Editor and Runtime. Assertion failed: NumTotalFrames > 0 [File:E ...