Unreal Engine Issues
Unreal Engine Issues
Conflict between sequencer transform track and Parent Constraint from the Animation Mode breaks temporary pivot translation on any actor
UE - Anim - Anim in Engine - Jul 15, 2025Note: This affects all versions from at least UE 5.3, including mainline latest. The "Animation" Editor Mode allows creating constraints for level actors. One of these, the "Parent" constraint, con ...
Rotation gizmo affects post processing and reflections in the scene
Tools - Jul 6, 2015This has been around since public launch. The rotation widgets emissive material will cause trouble with the post processing and reflections in the scene. Especially troublesome if you with bloom an ...
Regression of CanJump Function not being accessible in blueprints in 4.8
UE - Gameplay - Jun 26, 2015When trying to override the CanJump function of a character blueprint, the function does not show up in the MyBlueprint panel's function section. Hovering over the Function bar shows the "Override" ...
Panning in blueprints does not appear to be affect by windows pointer speed
Tools - Nov 14, 2016The windows mouse speed settings appear to have no effect on the panning speed in blueprint. ...
[CrashReport] Access violation in UE4Editor_Engine!TOctree<TVolumeLightingSample<3>
UE - Graphics Features - Jun 14, 2017This is a common crash in the 4.16 release. The callstack for the issue is essentially the same as [Link Removed], however that issue had confirmed repro steps and was verified fixed for 4.16.0. A ...
Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc
UE - Gameplay - Blueprint - Sep 1, 2015Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc. This is a regression; does NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2675088) ...
Incorrect number of parameters in empty Shipping version of the DrawDebugString() function signature
UE - Foundation - Core - Mar 26, 2019The DrawDebugString() function has to versions. One is the actual function to display a string of debug text in non-Shipping builds, and the other is an empty function that is used in Shipping build ...
ResavePackages Commandlet Consistently Crashes in 5.3 In Material PreSave
UE - Rendering Architecture - Materials - Feb 20, 2024Running the ResavePackages commandlet will consistently result in a crash. The callstack is here: Assertion failed: !IsRooted() [Link Removed] [Line: 265] UnrealEditor_Engine!UMaterialInterface::P ...
Example 1.3: Constraint Profiles animation not working in ContentExamples
UE - Content - Content Example - Mar 25, 2022This bug does not occur in //UE5/Release-5.0-EarlyAccess or in Release-4.27 making it a regression. This also occurs in //UE5/Main ...
Upgrading Project to a New Engine Version Causes Errors When Attempting to Open Tutorial Blueprints
UE - Gameplay - Nov 11, 2015When you create a project in version 4.8.3, and update it to either 4.10 or Main, there seem to be issues loading the Engine Content Tutorials for FeaturePacks, InstallingiTunesTutorial, and Setting ...