Unreal Engine Issues

depth calculation is not functioning properly on mobile ES 3.1 preview

In 5.1.1, the depth calculation is not functioning properly on mobile ES 3.1 preview, resulting in reflections occurring in areas where they should not. When checking with RenderDoc in ES 3.1 Previ ...

Point lights affect indirect lighting on RTGI much less than other types of lights

Only point lights affect indirect lighting on RTGI much less than other types of lights.[Link Removed] Indirect lighting of baked lightmaps look much stronger than RTGI.[Link Removed] Apparently, ...

NvEnc API creation failed in 4.24.1 with M60 card on AWS EC2 instances.

i had an AWS EC2 g3.4xlarge instance(Nvidia M60 card).  I could run 4.22 packed PS application correctly. When switching to 4.24.1, I got the following error when trying to start the application wit ...

Note visibility issues in 2025.1.1

ObjectScale returns a Cascade Mesh particle's XYZ scale as 1.0

Sampling a Cascade Mesh Particle's scale always returns XYZ as 1.0 This is a regression from UE4/Release-4.24.  This does NOT affect Niagara Mesh particles.  I've attached a Cascade (left example ...

The visibility state of on-screen stat messages is not restored correctly after entering and leaving PIE. This also affects other important on-screen messages like map warnings and debug messages.

Currently, the ShowStats viewport option is automatically enabled when entering PIE and automatically disabled when exiting PIE. This forced disabling happens even if the option was enabled prior to ...

Lightmap Coordinate Index is not automatically set to 1 on import any longer with lightmap UV

When importing a static mesh with a second UV channel setup for the lightmap the second UV is no longer being automatically assigned as the lightmap coordinate index. In 4.12 the second UV detected ...

Strange Behavior for LayeredBlendPerBone when Blend Pose 0 and 1 are in the same hierarchy

With Layered Blend Per Bone, if the bone for Blend Pose 1 is in the hierarchy below the bone for Blend Pose 0, then the Blend Weights have some odd behavior. Blend Pose 0 = root Blend Pose 1 = spin ...

Converting Project from 4.11 to 4.12 and Above Changes Relative Scale of Sockets to 1

When converting a project from 4.10/4.11 to 4.12(or later) the relative scale of the sockets on skeletal meshes will be changed to 1,1,1 regardless of the previous settings. ...

"Skip Assigning Gamepad to Player 1" Setting causes Force Feedback events to be incorrectly routed

The engine still uses the default index for calling force feedback events, despite them being assigned from player 1 on out. Which is why event on player 1 goes to player 0, event on player 2 goes t ...