Unreal Engine Issues

DataTable CSV export; First member of Array not exported if set to default value

When using a struct as a type for TArray and first element of the array has first member variable of the struct set to default, it is not exported to *.csv ...

Frame 0 event does not get triggered when using SetPlaybackPosition

An event at frame 0 of a sequence does not seem to get called when using "SetPlaybackPosition 0" to reset the playback position to the start. This seems to be a regression. 4.17.2, the frame 0 even ...

Assert when having too many VR devices

Internal team is encountering a crash when adding too many VR devices. Email thread titled "Re: Crash Logs" The bug is an internal limit of devices the code supports, which is 8. If a controller o ...

Unable to export UCX_mesh without UVs or generate mapping coords option ON

When welding collision between Third Person UE4 Mannequin's left foot ball, to left foot in physics tab results in an Engine crash.

When using a Third Person UE4 Mannequin, Opening the Physics asset tab, and welding the collision between left foot ball, to left foot results in an Engine crash. Additional Note: Using the same ...

Child Actors are not replicated to clients when the parent blueprint is nativized

Child actors do not replicate properly to clients when their parent blueprint is nativized. Regression?: Yes This did not occur in 4.20.3 See also [Link Removed] ...

SceneCapture2D output broken when used in VR

Scene Capture regression when used with VR. Confirmed in Main @ CL 5172170 Tested with Rift Flipped VR Preview window is a known/fixed issue ...

MoviePipeline: Disabling Auto Exposure in Project Settings not respected

The high-res tiling method checks for the exposure method specified on the camera, and forces it to Manual exposure if it's not already there. It shouldn't force this if the project settings have al ...

Incorrect behavior when copy-paste repeatedly in the sequencer subscene track

This issue is different for the first and second behaviors, which seems confusing when working. ...

Material Editor: Highlight/Isolate should warn user when using Nanite Mesh

Editor should visually warn the user that this feature doesn't work with Nanite, or that the Nanite Preview mesh needs to be enabled (or forcibly enable it when they attempt to use this option), oth ...