Unreal Engine Issues

Editor crash on BP recompile with custom FRuntimeFloatCurve variable

When a class contains a FRuntimeFloatCurve variable, compiling a blueprint of the class causes the editor to crash once a key has been added to the curve and selected Regression: Yes, the provided ...

Editor crash when a Breakpoint is added to a Widget's Tick function

Editor crashes when a widget's tick contains a breakpoint at a print string node. Based on 4.16 warning message, this appears to be caused by the text attempting to draw when no draw buffer is avai ...

Fbx Importer: Need to clamp incoming vertex color

Derived struct data is not copied to Base struct

The actor Blueprint is intentionally causing an object slice to occur. In other words, we're copying a derived type to a base type, so the expectation is that only the inherited base properties are ...

Morph Target Sets to Zero When Transitioning From 1 to -1 Causing Flickering

-Morph target cycles through all values instead of only alternating between 1 and -1 -Couldn't reproduce in 4.17 -attached a test morph target asset Link to example video from user: [Link Removed] ...

Syncing issue when stopping and blending out a non-looping montage to an anim graph

When syncing from a non-repeating montage that is blending out to an anim graph, the anim montage is marked as a follower due to having its PrevMaker as an AnimBoundary(-1), furthermore in this case ...

Select Node literals not populated when type resolved by connecting a pin

When you connect a pin to a select node and determine the type of the wild card pins the other option pins do not have their literal populated. This occurs for enums where no option is select and n ...

UMovieSceneSequenceTickManager does not consider settings of Fixed Frame Rate

Due to CL-20816478 UMovieSceneSequenceTickManager now calculates DeltaTime per Group instead of using DeltaSeconds directly. As a result, the FixedTimeFramerate in the project settings is being igno ...

Transform Track can't be edited for a empty actor dragged directly from Modes panel

This is a remaining case of [Link Removed]. If you drag and drop an empty actor from Modes panel to Sequencer, the actor's transform track can't be edited. ...

Crash in GPUMessage.cpp when resetting FSocket when RHI is NullRHI.

When tearing down a nanite project with the nullrhi active, there is a crash in the FeedbackManager destructor that causes any exit to be unclean. The teardown process causes a crash as the destruc ...