Unreal Engine Issues

Creating Widget at run time with an exposed variable causes Engine crash with Assertion

If you are using the default values of the In Size the project will run fine, but changing the values will make the engine crash. This was reported and tested in 4.25 (CL-13144385) and reproduced i ...

Crash when using EditConditionHides with a struct in an array

A crash can occur in FStructurePropertyNode::GetValuePtrOfInstance when using EditConditionHides with arrays of structs. When deleting an element from the array, ParentBaseAddress will be null. ...

Client is unable to Server Travel with the host when Seamless Travel is disabled

Client is unable to Server Travel with the host when Seamless Travel is disabled. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the client is able to join in, it is a regress ...

Layered blend per bone node with blend mask setting in an animation BP will not work after restarting UE editor, until recompiling the anim BP manually.

World Partition causes client to disconnect from dedicated server

When using connecting to a World Partition level on a dedicated server the client get's disconnected immediately. I tested this with a non WP level and the client connected with no issues. I've inc ...

[CrashReport] UE4Editor_Engine!FRepLayout::InitFromObjectClass() [replayout.cpp:2211]

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: Property->Proper ...

Lighting data wiped if sub level is hidden while rebuilding lighting for visible levels

When building lighting now you can no longer have a hidden sub level and have it retain it's built light if it was previously built. For instance, if you have a persistent level and hide the sub-lev ...

Packaging a DLC Plugin Fails with "Couldn't Update Resources" Error

Attempting to package a plugin as DLC is failing with the following error message: Program.Main: ERROR: AutomationTool terminated with exception: System.Exception: Couldn't update resource However ...

Extreme Brightness using SLS Specified Cubemaps for Skylights in VR

Surfaces are getting washed out or over brightened when using a Cubemap on a Skylight in VR. Tested 4.15.2 - 3416026 : Does not occur 4.16. p2 - 3415565: Occurs ...

[CrashReport] UE4Editor_AnimGraph!FCSPose<FCompactHeapPose>::GetComponentSpaceTransform() [bonepose.h:533]

This is a trending crash coming out of the 4.18 release and may be a regression. Users have not provided any details about their actions when the crash occurred. Source Context 528 template ...