Unreal Engine Issues

Mobile Depth of Field blurry eveywhere

user reports I investigated the problem throught the frame capture tools and found that on a real device (iPhone 15 Pro in my case), the depth texture for the SunMask pass is not set (a dummy black ...

Invalid access location compressing a BC6h texture in the editor

Large texture crashes during Oodle compression with "-stompmalloc". It appears to be an internal Oodle error. Also tested on //UE5/Release-5.5/, CL: 37463908 ...

Depth of Field blur is inconsistent with r.ScreenPercentage == 100 (Dynamic resolution)

Depth of Field, with "r.DOF.Recombine.Quality = 0" will adjust the size of the depth in focus based on screen percentage. This might be related to over-fitting from the tile classification, because ...

Point light leaking throught thin geometry

In 4.27, ray traced point lights can leak through thin meshes. This bug does not exist in Unreal Engine 5, due to many of the potential rendering areas being fundamentally changed. ...

UE 5.5 delayed Python initialization causes issues

From this UDN: [Link Removed] The customer reports that this issue did not happen in 5.4. ...

Circularly referenced blueprints cause stack overflow in a package game without IOStore

Lighting behavior is unreliable for translucent lit materials, results are inconsistent depending on the editor camera's FOV and the editor viewport's width/height/aspect

When working on the level editor viewport or testing on PIE, the visual appearance of additive/translucent lit materials changes significantly (and abruptly) when varying the camera FOV or the viewp ...

Crash in FPipelineFileCacheManager::RegisterPSOStats

The game can crash when one thread clears RunTimeToPSOUsage while another thread is expecting it to contain a PSO it is registering stats for. Thread A:  calls CacheGraphicsPSO() Thread B:  calls C ...

Editor crashes if close while Perforce providers have work in progress

This is from this UDN [Link Removed] ...

Long thin splines with wide tangents do not generate correct collision geometry

[Image Removed] [Image Removed] ...