Unreal Engine Issues

Crash in GetScreenRect on OPPO and Vivo devices

Actors with large numbers of components cause long hitches during cooking

Actors with large numbers of components cause long hitches during cooking. Here is a brief profile from Very Sleepy of the process while the editor was cooking: [Image Removed] ...

GPU Particle Collision changes based on Normal Intensity on Colliding Surface

Increasing the intensity of a Normal Texture on a colliding surface will cause the collision of GPU particles to behave strangely, looks to be falling through floor, when you are using a Constant Ac ...

Copying and pasting a material function renders all of the duplicates inputs as not having default values

The top material function was placed in a graph directly. The second was generating by copying the first node. Note that the input pins changed color which indicates that each input on the new modul ...

Paper2D Sprite doesn't cook deterministically

The "DummySprite" asset in Plugins/Paper2D doesn't cook deterministically, and as such is always included in patches. ...

Path Tracer Normals Issue

Path Tracing normal maps reflect light differently than Lit, and do not look accurate. Also observed in //UE/Release-5.6, CL: 45232827 ...

Crash reimporting Geometry Cache with Per X Frames

Crash occurs when the user reimports a geometry cache asset and changes the Sampling Type to Per X Frames. This seems to only occur if Frame Start is set to a value other than 0. ...

Custom events with a struct that has had its pin split will throw an error when adding variables to the blueprint

Custom events with a struct that has had its pin split will throw an error when adding variables to the blueprint. The Struct appears to throw an error when making changes that are seemingly unrelat ...

Crash When Toggling Visibility of Level with Planar Reflection

This crash occurs in 4.19 and 4.20 but not 4.18. Repro'd in 4.19.0-3944462 and 4.20.0-3955769 and 3964322. This is a regression. Per UDN licensee: When I'm showing/hiding levels in editor (in le ...

The base color of a material in unlit mode changes when specular amount is above 0.0

Material's RGB base color values are changed in Unlit mode when specular is greater than 0.  User repro video:  [Link Removed] Tested in: 4.23.1 CL#9631420, 4.25 CL#11574810 ...