Unreal Engine Issues
Unreal Engine Issues
Cannot call blueprint events on CDO
UE - Gameplay - Blueprint - Jun 27, 2017Attempting to call a blueprint event on a CDO object causes the editor to crash. Regression: Yes- Repro steps did not crash editor in binary 4.15.3 (CL 3450819) ...
Increment / Decrement nodes do not call BlueprintSetter functions
UE - Gameplay - Blueprint - Oct 31, 2017When BlueprintGetter / BlueprintSetter specifiers are used for a property, the increment/decrement nodes in blueprints will call the BluprintGetter function but not the BlueprintSetter function. Th ...
Hot Reload wipes all elements of UProperty TArrays in Blueprint subclasses
UE - Foundation - Cpp Tools - Hot Reload - Dec 5, 2017Hot 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, 2018The 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 ...
Reset seed on emitter looping not working properly
UE - Niagara - Dec 31, 2019The "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 ...
Scaling and rotation modes of the gizmo should be disabled in Paper2D Sprite Editor for vertexes
UE - Gameplay - Paper2D - Sep 23, 2020The 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 ...
In Android, the UI does not fill the entire screen and there is an empty space
UE - Platform - Mobile - Jan 30, 2023After migrating to version 5.1, the UI does not fill the screen and there is an empty space. Please refer to the attached screenshot and test project. tested device : galaxy Z flip 3 ...
PIE also rendering in-active / unfocused editor viewport
UE - Graphics Features - Nov 28, 2025In 5.8, after entering PIE, the editor will start doing two SceneRenders per frame. This dramatically drops performance. Presumably this second render is for the inactive / unfocused editor viewport ...
Editor crashes When exiting VR mode if the command "hmddbg showcamera on" was used
UE - Platform - XR - Jun 30, 2015If the user inputs the command "hmddbg showcamera on" via a command line input then the editor will crash when exiting out of VR Mode. ...
Duplicating a blackboard node within a behavior tree will cause a crash
UE - AI - Jul 16, 2015When using the shortcut Crtl+W to copy a blackboard node within a behavior tree the editor will crash ...