Unreal Engine Issues
Unreal Engine Issues
MID TextureCollections don't work with Post Process Overlays
UE - Rendering - RHI - Aug 24, 2026TextureCollectionParameters in a material assigned to a Post Process Overlay are not overridden by a MID because CopyInterpParameters in Engine\Source\Runtime\Engine\Private\Materials\MaterialInsta ...
ASan on iOS is broken
UE - Platform - Mac - Mar 1, 2024Address Sanitizer (asan) is currently not working on iOS. This could be a helpful feature to get working again. ...
NavMesh does not update properly when "Can Ever Affect Navigation" is toggled (For Static Meshes)
UE - AI - Sep 15, 2015This issue is related to [Link Removed] (which was fixed). However if the user creates a new actor and then adds a static mesh they can end up with permanent holes in their nav mesh. If the user tog ...
Vehicle physics are resolving erratically and causing random jitter/flips in the Advanced Vehicle Template
UE - Simulation - Physics - Nov 16, 2016When a vehicle is on an uneven surface, the physics that are handling where the wheels should be placed is resolving sporadically, causing noticeable jitters and sometimes flipping. Regression?: Ye ...
Widgets can no longer take focus after clicking somewhere other than the widget itself
UE - Editor - UI Systems - Jan 25, 2017Widgets can no longer take focus after clicking somewhere other than the widget itself. The input mode appears to change, but does not change back when clicking widgets Notes: -This issue did not a ...
Editor Crashes When Cloth Asset Is Applied To Material With Support Compute Skincache Enabled
UE - Simulation - Physics - Character - Feb 24, 2017After enabling Support Compute Skincache if you attempt to apply a cloth asset to a material in the skeletal mesh editor the engine will crash. This may seem similar to [Link Removed] but I confir ...
Solidworks 2018 Virtual Parts aren't imported
UE - Editor - Content Pipeline - Datasmith - Importer - Aug 22, 2018When importing a Solidworks 2018 CAD assembly, if the part in the assembly is a virtual part (denoted by brackets in the feature tree), a part that exists only within the assembly, the part and rela ...
Streaming Multiple Instances of the Same Landscape Actor All Have the Same GUID
UE - LD & Modeling - Terrain - Landscape - Apr 15, 2019If a level contains a landscape actor, and if you stream multiple instances of that level into your map, you will get errors in the message log that the landscape actors have the same GUID. Found i ...
Crash when loading iCloud/CloudKit SaveGame on iOS
UE - Platform - Mobile - Jun 5, 2019"...it seems the crash occurs because it is trying to load an empty (0 byte) save file. Stepping through the code in Engine/Plugins/Online/IOS/OnlineSubsystemIOS/Source/Private/OnlineUserCloudInterf ...
Moving actor to another level breaks soft object reference
UE - Gameplay - Jun 9, 2020REGRESSION: In 4.24, there was a fixup process that would allow the soft reference to remain valid. This seems to be missing in 4.25 Moving an actor to another sublevel immediately breaks soft ref ...