Unreal Engine Issues

Simulate motion vectors can fail on camera cuts

r.MotionVectorSimulation 1 should simulate motion vectors when cutting cameras, but this appears to be broken on some loops. ...

Crash in Nativized Packaged Game When Overriding Server Event and Calling Parent

A crash is occurring in a nativized packaged game when overriding a server event and calling the parent's implementation in a derived class. The crash doesn't seem to produce a detailed callstack. ...

Jump Animation for FPS template character breaks on land

When jumping in the first person template project, the "is in air" animation continues to play after landing. Solution: Switching out the "FirstPerson_JumpStart Asset" node for the "FirstPerson_J ...

Rect Light Texture does not unload during level streaming in packaged game

Local Exposure can cause large variations in PreExposure under certain conditions

PreExposure is influenced by LocalExposure in PostProcessEyeAdaptation.cpp:1265. It appears when the scene is particularly dark and using manual exposure, the LastAverageLocalExposure can read a lar ...

The red time indicator for viewing curves in persona is slightly tilted

The time indicator for curves in persona is slightly tilted off vertical. This also occurs in 4.13 main. ...

Enable Slate layout caching Will cause the Stop/Play Buttons to disappear

When using the command Slate.EnableLayoutCaching 1, The Play button is removed from the tool bar after exiting play. ...

Hair shading emits light when Lumen is enabled

This artifact does not occur when Lumen is disabled. Also, moving Roughness closer to 1 will reduce the effect. ...

All Megascan asset libraries are missing

All Megascans assets no longer appear in Twinmotion 2025.2 hotfix (46767548). Other libraries do not appear to be affected. ...

Project crashes when exiting mobile preview

User project crashes when exiting from mobile preview. Frequency: 5/5 Crashreporter: [Link Removed] ...