InitSDL() failed error when launching onto Linux

UE - Platform - Linux - Jan 22, 2021

When launching onto Linux, the launch on fails Also tried launching on with QA-Promotion, still failed with same error, ruling out water ...

Attach track in the Audio track of Level Sequence becomes Unresolved Binding when the Editor is restarted.

UE - Anim - Sequencer - Jan 22, 2021

It looks like the Actor's Binding information has not been saved successfully. ...

Crash when setting Retainerbox scale is set to 0 at runtime

UE - Editor - UI Systems - Jan 22, 2021

Crash at runtime when Retainerbox scale is set to 0. The call stack indicates that the size of RenderTarget2D is set to 0. Attached repro project sets the scale of the RetainerBox that wraps the Im ...

Toggle Pose Watch in AnimBP not working with Root Motion from Everything

UE - Anim - Runtime - Anim Blueprints - Jan 22, 2021

Combobox navigation does not work consistently

UE - Editor - UI Systems - Jan 22, 2021

Navigation on combo box widgets will sometimes fail until the combo box close button is pressed, despite it not being open. This appears to be related to accessibility features added in CL# 13258546 ...

Sequence with null skeletal track sections crashes on load

UE - Anim - Sequencer - Jan 21, 2021

Add contents of the zip file to your 4.26 project. Open the level sequence.  EXPECTED: It shoudln't crash. Log will print saying that it removed some animation sections. ...

Failure to add key and potential crash when adding keyframe to sequence through details panel

UE - Anim - Sequencer - Jan 21, 2021

There is the potential for a crash when adding a key through the details panel. In cases where there is no crash the key is not added.  ...

[Sound Submix] - Dry Level of a Submix is calculated differently whether or not there is an effect in the chain

UE - Audio - Submixes - Jan 21, 2021

There is a discrepancy is how the output volume of a submix is calculated when the effect chain is and is not populated. When there is no effect on the submix, the Dry Level adds additional gain to ...

UMovieSceneUserImportFBXSettings is not a blueprint type.

UE - Anim - Sequencer - Jan 20, 2021

This class is needed for FBX importing through blueprints. It needs the BlueprintType class specifier. ...

Assertion failed occurs in VR when walking into water on QA-Waterworks map

UE - Graphics Features - Jan 20, 2021

Encountered a crash when testing shadows in QA-Waterworks map. I found an issue when walking into the water at the bottom for Example 2A, where it would crash upon entering the water. See screenshot ...