Unreal Engine Issues

Lighting channels on static mesh doesn't change correctly at runtime

If call SetLightingChannels in blueprint to set a static mesh's lighting channels at runtime, the mesh in the viewport seems can't update to the new lighting channel setting.  A weird thing is, if ...

AfterMotionBlur Translucent Material With Local Exposure Enabled Causing Artifacts

When TSR is enabled, translucent materials using the AfterMotionBlur translucency pass cause visual artifacts when local exposure is active. The artifacting is believed to occur because the local ex ...

LastRenderTime does not update when Occlusion Culling is disabled

When disabling Occlusion Culling, Components will not have their Last Render Time updated. ...

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible. The behavior only shows after d ...

Transform does not update after first time for Instance Static mesh in Blueprint Editor

In 4.15 When you update the transform of an instance static mesh a second time the editor does not update the location, to get the update to display correctly you must close and re-open the blueprin ...

HDR Cubemaps Do Not Reduce File Size When Packaged Using ASTC Format

Currently HDR Cubemap textures aren't getting compressed when packaging for Android(ASTC). You can compare the file size of a packaged project before and after adding cubemap textures to verify this ...

Sequencer Render: Animation not updating for a moment on camera cut

When rendering from sequencer to an image sequence, character animation stops for 2 frames after a camera cut. This hitch does not occur when playing the sequence in PIE I've attached some sample d ...

Combo box default selected option text does not show up when the widget is outside of the bounds of a containing widget

The text for the selected option on a combo box does not show up if the text has been placed fully outside of a containing widget. As in this example the combo box has been moved via render translat ...

Scale by Safe zone setting for Scale box does not scale children as expected

Children of a scale box that is set to Scale by safe zone do not appear to scale as expected. ...

MoviePipeline: Field of View doesn't match viewport when using the Squeeze Factor property