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 ...

LandscapeSplineMeshesActor instances not deleted when World Partition is disabled

When landscape splines exist in a WP level, LandscapeSplineMeshesActor instances are created to allow streaming of splines. In a non-WP level, splines are components of the landscape actor. When a W ...

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. ...

Editor Primitives do not render correctly when Composite Editor Primitives is disabled

When the Composite Editor Primitives setting is disabled, these editor primitives do not render correctly. In specific, ZoneGraph editor primitives do not render with a colour. This appears to be t ...

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

Property Editors fail to import text values for FKeys within array/set/map containers when the key is identified by some valid non-alphanumeric characters

The FKey structure represents a user action input such as a keyboard key, a mouse button/wheel, or a gesture in VR. For the keyboard, it can represent any pressable key, such as letters, numbers, sy ...

A Geometry Collection with Removal-On-Break, after breaking and shrinking until vanished, will reset to the original state (full-size and unbroken) if we toggle between Fullscreen and Windowed while playing as standalone or Packaged Build.

A Geometry Collection with Removal-On-Break, after breaking and shrinking until vanished, will reset to the original state (full-size and unbroken) if we toggle between Fullscreen and Windowed while ...