Unreal Engine Issues

[AI] Navmesh does not generate correctly on a negatively scaled ISM.

Setting a single axis of an ISM negative results in navmesh not being generated on top of it. However, setting 2 axes to negative scale does have the navmesh generate as is expected.  Also see more ...

Opaque material assigned to a Material Billboard attached to a Pawn renders differently against the Sky/Infinity when moving

This is a regression. Tested in //UE4/Release-4.27 CL18319896 Opaque material assigned to a Material Billboard attached to a Pawn renders differently against the Sky/Infinity when moving. Tested ag ...

Stride Warping in manual mode not activating correctly based on first StrideScale

From licensee: If StrideScale is 1 the first time through, it initialises the StrideScaleModifierState to 1 and doesn't require updating so leaves the CachedDeltaTime at 0 by never calling Update_I ...

MoviePipeline: Apple ProRes/Avid DNx crash when "Overwrite Existing Output" is off

Landscape LocalMerge crash with PaintLayer enabled

[MetaSounds][Inputs] - When multiple copies of an input node are on the graph, all connections reconnect to one node when an input is renamed

If there are multiple copies of an input on the graph, when it is renamed, all the connections are broken and rerouted to a single node, orphaning the rest on the graph. I believe this may be a dupl ...

[Audio Capture] - Editor crashes when activating an Audio Capture component when there are no active input or output devices avilable

If a device has no available input or output devices, activating an Audio Capture component will cause the device to crash. Occurs in Editor and Runtime. Assertion failed: NumTotalFrames > 0 [File:E ...

MoviePipeline: OnExecutorErroredImpl has inverted bError bool usage

OnExecutorFinishedDelegateNative and OnExecutorFinishedDelegate broadcasting an bFatal into a bSuccess parameter which is inverted. Canceling a render should be considered an error, not a success. ...

TSR does not seam to work on AMD

[AI] NavModifierComponent includes non-navigation relevant primitive components in its navigation bounds calculation.

If an actor contains multiple primitive components, it uses all of them for calculating navigation bounds even if some of the primitives are not marked as navigation relevant. Toggling navigation re ...