Unreal Engine Issues

WindowsVideoRecordingSystem can start late to record when a Record/Start action is executed.

The WindowsVideoRecordingSystem can start to record late when a StartAction is done. Not sure if it starts to record late, or the first seconds of the resulting video are ommited when the mp4 file i ...

Eye Adaptation post process volumes make the viewport extremely bright

In 4.14 when entering the volume the screen brightens which is expected. The problem is that in 4.15 it brightens more. So much so that some static meshes are rendered almost completely white. I ...

Static Mesh Editor: Give options for drawing complex/simple collision

The collision mesh and the display mesh are often similar enough to be difficult to differentiate, and there is currently no way to view the collision wireframe without the display wireframe as well ...

VolumeLightingSamples are not generated correctly

Lightmass.exe SampleVolume.cpp seems to generate VolumeLightingSamples correctly. After that, import processing is performed with Lightmass.cpp ImportVolumeSamples (), but it seems that it is not i ...

Enabling window animations causes dropdown menus to flicker and become unselectable

Not a regression as I was able to repro this in 4.25.4 The bug doesn't occur every single time, you may need to try disabling/re-enabling the setting and/or clicking on the menu dropdowns a few tim ...

Shadows tessellation are Z-Fighting in Template project with Mobile Rendering

I noticed that the shadow on orange blocks were sometimes on the front of the block and sometimes on the side of the blocks. Sometimes the shadow wouldn't render at all. ...

Create Blocking Volume from multiple selected Staticmesh actors in viewport generates messed volumes

The result unexpected: The collision volume shape generated was just strange and much bigger than it should be Expects: The collision volume generated should wrap up group of actors and right fit t ...

Screenshots Comparison Tests with different partitions.

The logs says: - AutomationFunctionLibrary: Screenshot captured as D:/xx/L_Test_Screenshots_outlined/Windows/D3D11_SM5/2dd1ddbfed537136cba0ef30863412f1.png - New Screenshot 'xx' was discovered! Plea ...

BP component parameters lose keyboard focus

InstancedFoliageActor experiences issues with floating point precision when far away from World Origin and is not affected by Origin Rebasing

Foliage generated by Landscape Grass Type do not encounter this issue. Only hand painted foliage with foliage tool is not affected by rebased origin. Foliage vibrates when it is located in long dist ...