Unreal Engine Issues

Although it is almost empty scene, the value of Draw value syncs to the value of Frame value on iOS device

Although it is a scene with little cost, the value of Draw value syncs to the value of Frame value on iOS device.  If it is less than 60 fps with t.maxfps 30 etc., this problem will not occur. Proj ...

Failure to attach component in a non-nativized child Blueprint class to an inherited component from a nativized parent Blueprint class.

Attachment will currently fail at runtime during load and/or construction if a component from a non-nativized child Blueprint is attached to an inherited component from a parent class that is nativi ...

GetHMDDeviceName function's name is no longer accurate, is confusing

UHeadMountedDisplayFunctionLibrary::GetHMDDeviceName()  says it returns the "device" you are using, but it really returns the name of the SDK or XR System that you are using (for example launching o ...

Editor Crashing on Details Panel when Calling ForceRefresh

Editing bool of the nested child CrashableDataAsset causes crash. Expected: CrashableDataAsset children are properly assigned. Result: Engine crash ...

Forced reboot launching editor the first time

Note that before I tried running the editor via the Launch button, I just happened to run the Editor exe directly, and this did not repro then. After my PC rebooted I tried to reproduce it again an ...

Can't navigate in Viewport or use Hotkeys when launching UE4 with a Russian keyboard layout on Linux

When using a Russian keyboard layout and/or a Russian keyboard, you can't use any hotkeys or navigate around the Editor. After testing this with a German keyboard as well, it is believed this issue ...

GetComponentsByClass fails to compile if Class provided is untouched

When using the "Get Components By Class" node, you get a compile error if you don't change the default value of the Component Class on the node after adding it. It is believed the Component class no ...

PlacedEditorUtilityBase class no longer ticks in the editor

This is a regression as it is working as expected in 4.18. When using the class PlacedEditorUtilityBase to draw a debug sphere, it doesn't appear in the editor in 4.19 and 4.20. ...

There are assets with no name when deleting datasmith assets

Widgets provide warnings instead of errors for "Access None"

Widgets provide warnings instead of errors for "Access None". When hitting and access none a widget blueprint does not produce an error. However, a warning can be found in the output log. This appea ...