Unreal Engine Issues

Replay scrubbing causing issues with placed actors with negative scales

A replicated actor placed in a map with a negative scale value becomes inverted when scrubbing a replay. ...

Post processing bloom threshold activates when the threshold is >0 instead of >-1.

Can't assign LightMapCoordinateIndex on Static Mesh with generated LODs

Once a static mesh have generated LODS, the only lightmap index value the static mesh editor's UI accepts is 0. We should be able to set the index to any value between 0 and 3 as long as there are ...

'Particle Position', 'Particle Time' and 'Particle Random' material nodes not supported on mobile

Replay playback can become paused indefinitely after scrubbing with high time dilation

When playing a replay with DemoPlayTImeDilation set to 5, and jumping around the timeline using GotoTimeInSeconds(), the play back can break, with game actors freezing and violently shaking. It seem ...

Bug - Animations and Keep State Fail when scrubbing backward.

If you scrub past an animation with keep state, and scrub into an animation with defaults everything is fine. When you scrub back to the animation with keep state, the animation breaks, until there ...

Crash in VisualizeComplexityPass

Uncrouching a character on a physics object causes the character to penetrate the object only when physics substepping is enabled

This does not repro when physics substepping is disabled. The sequence of events in the character uncrouch code (UCharacterMovementComponent::UnCrouch) causes the capsule to move up then increase i ...

Cannot navigate to native function source code from blueprint editor

REGRESSION RANGE WORKING: 9404494 (right before Dev-Core copy up at 9405827 BROKEN: 9407021 (Dev-Networking copy up) NavigateToFunctionSource: Unable to find symbols for 'UPaperFlipbook::GetNumFr ...

Making a navigation system 'strictly static' affects all subsequently created navigation system instances

The problem is a result of two things: UNavigationSystemV1::bStaticRuntimeNavigation being staticUNavigationSystemModuleConfig::UpdateWithNavSysCDO copying the data from nav sys CDO, including bStat ...