Unreal Engine Issues

StaticMeshEditor - "Generate UV" tool no longer works

Ensure playing a sequence that has an event trigger that calls SetPlaybackPosition

https://answers.unrealengine.com/questions/1003504/loadsequence-and-where-is-setplaybackposition.html ...

Setting Texture Object within Niagara fails to update texture

Based off of a saleforce ticket, it seems that reinitializing a niagara system with an updated texture, the texture does not update. The setup works correctly in 4.25, so marking as a regression. ...

Vulkan RHI when execute the node "Create Render Target 2D" when enabling the option "AutoGenerate Mip Maps"

Unreal Crash in with Vulkan RHI when execute the node "Create Render Target 2D" with the option "AutoGenerate Mip Maps" then execute "Draw Material to Render Target" Opening the project also opens ...

Cascade particle system crash when changing levels in a cooked game

Changing levels with an auto-released particle system will cause cooked builds to crash. This is a regression. This crash does not occur in 4.25 ...

Crash occurs when compiling in Editor after editing a C++ file

Crash seems inconsistent, doesn't seem to happen every time. You may have to change the variables and re-compile through the editor a few times to get it to trigger. The crash did occur for me when ...

Duplicate level collections not being respected by UGameEngine::NetworkRemapPath

When NetworkRemapPath was refactored in 4.26 to support replay connections via the rep graph, the check for duplicate level id on the driver was lost in the new code path. This causes the demo driv ...

WaitMutex behaves poorly when there are casing differences in the same path

The proposed solution here is to make the casing of the path provided to the hashing function for the mutex consistent with something like:publicstatic string GetUniqueMutexForPath(string Name, stri ...

GetBoundObjects is not returning spawned objects when the playback start is nonzero

Subobject components do not have undo functionality within the level

When moving these components around in the world editor, the transform gizmo will move with the undo, but the actual component will not.  I could not repro this behavior with non-native component ...