Unreal Engine Issues

BP using nested child actor components in streaming level causes ensure condition failed

This never happens on ue5.0.0 The problem appears to be caused by a deleted PhysicsProxy being registered with Solver. Since the solver accesses the deleted PhysicsProxy, it may crash. Checking a ...

Can perform infinite "double jumps" when JumpMaxHoldTime is greater than 0.

There's a bit of broken (or missing) logic in ACharacter that doesn't account for users having released the jump button. This is a well known issue, and there's even video's describing how users can ...

[CrashReport] Assertion failed: OLEReferenceCount == 0 in UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private()

This is a regular and longstanding crash in 4.17 that has occurred since at least 4.14. Users have not provided any descriptions of their actions when the crash occurred. There has been some previo ...

Differences in DistanceToNearestSurface and DistanceFieldGradient results between 4.27 and 5.0

In the UE5 case, we end up seeing very harsh lines in both the gradient and the distance to nearest surface examples whereas the results in 4.27 appear smooth.  It was also interesting to observe c ...

t.MaxFPS 0 locks FPS to 120 instead of unlocking it in Viewport

When unlocking FPS in Viewport it defaults to 120 instead of potential max FPS. If you do this during Launch the 't.MaxFPS 0' or 't.MaxFPS -1' commands unlock the FPS to the max the GPU allows in th ...

Crash after setting a key on a Rotation Track, then trying to right click the key with Transform track collapsed

Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 336 337 if (bHasRotationKeys) 338 { 339 TSharedRef<FStru ...

Modified a mesh used as complex collision mesh does not affect the collision in the editor

When a user changes any properties (for calling PostEditChangeProperty ) in parent static mesh or restarting the editor, the modified mesh is applied correctly. how to reproduce: [Link Removed] ...

Skeletal mesh LOD 0 "LOD Info" loose their settings when we reimport

Set critical because loosing settings is dangerous. This is not a regression, the bug is in 4.22 and earlier version. We have to save all options of the LODInfo, currently nothing is saved. Also sh ...

Unable to summon the virtual keyboard on Android 9.0 with TargetSDKVersion=28

Getting Emitter.NumParticles on Niagara's GPU compute sim returns 0

This problem looks like the following parameters are not defined correctly. The correct parameter is Engine_Emitter_NumParticles. Engine_Emitter_NumParticles and PREV_Engine_Emitter_NumParticles .\ ...