Hot Reload wipes all elements of UProperty TArrays in Blueprint subclasses

UE - Foundation - Cpp Tools - Hot Reload - Dec 5, 2017

Hot reloading a change that affects a class that contains a TArray UProperty will wipe all of the array elements of any Blueprint subclasses of that class. Regression?: Yes This does not occur in 4 ...

Toggling visibility of Sublevels on a server can cause a disconnect if Dynamic Actors exist in the sublevels.

UE - Networking - Aug 17, 2018

The PackageMap / NetGuidCache appear to get into a bad state on Clients if the Server toggles level visibility of a sublevel. This can affect currently connected clients, as well as clients that jo ...

Start ARCore Session - Session config fails

UE - Platform - XR - Nov 27, 2019

ARCore Regression Not seen when updating 4.23 project to 4.24 This did NOT reproduce when updating 4.24 project (Created with Preview 4) to 4.25 MAIN 10406617 ...

"Restore Open Assets Tabs on Restart" Doesn't Reopen Asset Tabs

Tools - Dec 16, 2019

Enabling "Restore Open Assets Tabs on Restart" doesn't reopen asset tabs when opening a project . Found in 4.24 CL#10570792 Reproduced in 4.25 CL#10719465 ...

Reset seed on emitter looping not working properly

UE - Niagara - Dec 31, 2019

The "Reset Seed on Emitter Looping" has no effect when enabled.   Tested in: 4.22.3 CL#7053642 , 4.23.1 CL#9631420 , 4.25 CL#10868506 ...

Custom Launch Profiles lose selected projects after first re-open of the editor

Tools - Jan 2, 2020

Selected project resets in a custom project launcher profile only after the first time restarting the editor.  Tested: 4.24.1 CL#10757647 4.25 CL#10873002 ...

The Radial Blur Shader Doesn't Look Correct With Raytracing Translucency Enabled

UE - Graphics Features - Lumen - Jan 21, 2020

The Radial Blur shader doesn't look correct with ray tracing translucency enabled. Found in 4.24.1 CL#10757647 Reproduced in 4.25 Main CL#11050671 ...

Scaling and rotation modes of the gizmo should be disabled in Paper2D Sprite Editor for vertexes

UE - Gameplay - Paper2D - Sep 23, 2020

The modes are useless and should be disabled while the vertex(es) is(are) selected. The same behavior in Edit Collision and Edit RenderGeom modes. I've checked it in 4.25.3. Probably, this bug exis ...

The Get Class Default node's Hide Unconnected Pins option no longer hides the appropriate pins

UE - Gameplay - Blueprint Editor - Mar 19, 2021

The Hide Unconnected Pins option in the Get Class Defaults node no longer hides any of the pins. Tested in //UE4/Release-4.25 @ CL 14469661 and this did not occur so marking as a Regression. ...

Syncing Font Assets through Subversion can cause a crash

Tools - Jun 5, 2017

A licensee is having issues syncing their fonts folder from within the editor using Subversion. This issue only occurs with their Fonts folder; with the callstack they supplied, this leads me to bel ...