Unreal Engine Issues

Crash when opening a blueprint that implements an interface that has been deleted

UI transparency breaks when dragging a game window around the screen

When a game window launched from UE is moved around the screen, any transparent elements on the screen will turn fully opaque. The loss of transparency also causes some text to become blurry. This d ...

Sharing TransitionRule of multiple AnimStateTransitionNode, when AnimBP is opened it becomes dirty

Sharing transition rule it will be Dirty when AnimBP opens. When AnimBP is open, "if(BoundGraph->GetOuter () != Node)" is true in FBlueprintEditorUtils::UpdateOutOfDateCompositeWithOuter, BoundGrap ...

"No value will be returned by reference" when calling Event Dispatcher with an Array

When creating an Event Dispatcher that sends an array, a blue Note shows up on the bottom of the Call node stating that "No value will be returned by reference". This is a similar issue to [Link Rem ...

Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level

Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...

Convert CharacterBP to Spawnable in Sequencer cause crash

[Link Removed] ...

Don't display events in blueprint function with profile stats.

When look at stats in Unreal Frontend, can see the events that run in the function. It work in 4.21, but it doesn't work in 4.22. ...

Overlapping Lightmap UVs Generated When Not In None LOD Group

Overlapping lightmaps are generated when the LOD group is not the default. Setting the LOD group to None and rebuilding lighting doesn't have the same result. Found in 4.24 CL# 10570792 Reproduced ...

Merging actors with two-sided materials produces incorrect results

Merging two actors using a two-sided material produce incorrect results. Notes: Tested with "Allow two-sided material" on and off, the same result is produced. The same issue can be seen when ge ...

Color picker does not change the color of a Vector Parameter in a Material Instance until the mouse button is released

This is a regression from 4.23.1 (CL-9631420). The color picker does not update in realtime anymore when holding down the left-mouse button. Only on mouse-release does it update. This was reported ...