Unreal Engine Issues

"ERR: Transient text cannot be serialized" after converting to 4.8

"ERR: Transient text cannot be serialized" after converting to 4.8. Many users are seeing them in the logs. Example Project: [Link Removed] ...

Eye Adaptation post process volumes make the viewport extremely bright

In 4.14 when entering the volume the screen brightens which is expected. The problem is that in 4.15 it brightens more. So much so that some static meshes are rendered almost completely white. I ...

HISM: Calling UpdateInstanceTransform with a transform only containing rotation or scale would not update the transform at runtime or cooked

Calling UpdateInstanceTransform on a HISMC with a transform only containing rotation or scale would not update the transform at runtime or cooked. ...

Some .tmi files from previous versions cannot be used in TM2025.2

Some .tmi files appear, while others don’t.The customer mainly uses Blender and SketchUp.On the customer side, even the TM asset “Metal workout desk DCL” has the same issue.On my (Syuya Mukai) side, I ...

Spline Mesh With Negative Start and End Scale Has Broken Lightmap

When you have a negative start and end Scale for a spline mesh the resulting lightmap that gets baked for the mesh will be incorrect. ...

Menus flash when being opened with application scale adjusted

When application scale is adjusted the menu bar menus will flash when they are opened. This issue is occurring in //UE5/Release-5.0-EarlyAccess Binary CL 16433597 This issue is NOT  occurring in // ...

Datasmith Tessellation does not work as operator in the visual dataprep

If using BP that inherits DataAsset as Value of Map in Struct, it will be replaced with PLACEHOLDER-CLASS after restarting editor.

Attempting to add or alter custom functions in character blueprint crashes editor upon compile

Editor crashes when adding or adjusting functions within character blueprint. Frequency: 5/5 Crashreporter: N/A Note: Does not reproduce on a new character blueprint, this seems limited to a cha ...

Adding variables to components reports incorrect owner

Components that have variables added to them cause the component to register the wrong blueprint owner. ...