Unreal Engine Issues

Large Landscapes using World Composition have weird LODs when streamed out and back in

When World Composition Sublevels are streamed out and back in the LODs appear distorted. This reported and tested in 4.24.3 (CL-11590370). This was reproduced in 4.23.1 (CL-9631420), 4.25 Preview ...

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 ...

Adding Components via Editor Utility Widgets does not add component to Details panel

Using the Editor Utility Widget to add components to objects in UE does not appear to function as expected. I reproduced this 8/8 times in UE 5.1, 5.0, and 4.27, confirming that this is not a regres ...

Cloth collisions thickness doesn't scale with the character.

Character's clothes bubble up as their scale goes down due to the collision thickness not being correctly scaled. ...

Display Texture Atlases in Widget Reflector displaying incorrect tooltips

Tooltips within Page 1 of the Texture Atlas Visualizer in Widget Reflector are displaying the incorrect asset. This issue is occurring in Binary //UE5/Release-5.3 at CL 26560699 This issue is occur ...

Rect light artifacts from NaN pixels on surfaces that are coplanar with light position

Rect lights cause artifacts (nan pixels) on pixels of surfaces that are coplanar with light position.  In RectLight.ush, in RectIrradianceLambert, at line 106, c30 is -1, so rsqrt(0) causes a nan to ...

Reduce the overhead of World Partition cells UObjects on GC

Users with large numbers of UObjects (500k+) that are using World Partition want to enable GC actor clustering to handle streaming levels but no performance gains are realized when enabling GC clust ...

Windows Game Input - DualSense/DualShock controllers DPad button repeat events behave unexpectedly

Crash playing a HapticFeedbackEffect_Soundwave with no sound assigned

Crash attempting to use a HapticFeedbackEffect_SoundWave with no sound set on it (i.e. a newly created one.) Found on: 4.13.1 Binary CL-3120228 //UE4/Release-4.13 CL-3123398 Similar to [Link Remo ...

Crash on UObject::ProcessEvent after 4.7 update

Crash Report [Link Removed] Bugg 38910 After updating project from 4.6.1 to 4.7, user experiences unexplained crash when playing in editor. *In addtion to the crash report, the user provides a lot ...