[AI] Navigation System can be constructed in situations where the NavigationObjectRepository subsystem is not valid

UE - AI - Navigation - Feb 7, 2025

Investigate and fix all calls where the Navigation System is constructed without the NavigationObjectRepository subsystem being valid.  ...

Cook errors with landscape cross-level spline meshes

UE - LD & Modeling - Terrain - Landscape - Dec 18, 2015

Licensee is using a modified engine but has a workaround, we need to verify that the same doesn't happen in vanilla UE4 and fix if it does. ...

T_Wood_Pine_D Asset has Offset Alpha Channel

Docs - Samples - Sep 12, 2016

The alpha channel seems to be offset in the x and y by 1024 pixels this has been fixed and attached for analysis. ...

Widget "Listen For Input Action" executes on unexpected input event

UE - Editor - UI Systems - Feb 19, 2020

Listen For Input Action firing erroneously. Confirmed in 4.26 MAIN @ CL 11536993 ...

Some Niagara Fluid systems are not visible in a packaged project

UE - Niagara - Jun 7, 2022

Previously packaging caused a crash with this system. This was fixed, but now the system is no longer visible when packaged. ...

Route gamepad to second window setting is broken

UE - Gameplay - Input - Nov 11, 2022

The RemapControllerInput function call likely needs to be added back to the game viewport client as a fix.  ...

WorldPartition: Attached Actors within Level Instances save level offset bounds

UE - World Creation - Worldbuilding Tools - Level Instances - May 9, 2023

The proposed fix is implemented in CL 25389340 but needs further testing to make sure there are no issues caused by it. ...

WorldPartitionActorDescs for LevelInstanceActors are broken when migrating world partitioned level

UE - World Creation - Worldbuilding Tools - Level Instances - Jun 13, 2023

WorldPartionActorDescs will be restored to the correct properties when resaved. They can also be fixed by the WorldPartitionResaveActorsBuilder commandlet. ...

Behavior tree assets marked dirty when opening in subeditor

UE - AI - Aug 16, 2016

Found while I was fixing up other content, that Behavior Tree assets are being marked dirty by just opening them into sub editor. ...

Moving or renaming a file in the editor should execute a Perforce move command not a delete+add

Tools - Aug 31, 2016

Moving or renaming a file in the editor erases its perforce history. It should execute a move not a delete + add to fix this ...