Unreal Engine Issues

Moving a mesh with complex-as-simple collision clears overlaps previously detected by moving collision components

Consider a static mesh set to use complex-as-simple collision, and a convex collision component, starting to overlap each other. When only the Collision Component moves, its collision with the stat ...

Incorrect error icon on stationary lights in a sublevel when the sublevel is first added

When you add a level with stationary lights to another level as a sublevel they will show a first error icon on the lights. Once you close the project or refresh the level this icon is shown as nor ...

UAssetDefinition doesn't allow overriding actions from base classes

In the new implementation UAssetDefinition to define the actions for asset we found that it isn't possible to delete or hide actions from parent classes due to the ToolMenu system works with delegat ...

Displaying Revision control history for a file ending in an "undo" of a revision can cause a crash

This crash is caused by how source control history is managed and shown. In this specific case the source control software is Perforce. As written in the repro steps, it can happen to any uasset tha ...

Editor will crash if a material uses ImposterCaptureSwitch material function after build lighting

Special characters in file names are not escaped on Perforce commands

Files and directories with special characters %, @, * and # are not escaped when sent to the P4 Client API. For example, an '@' character is common in root workspace folders when using concurrent bu ...

UGS perforce login does not work with 2FA flow

The perforce login flow for UGS does not properly handle a perforce server using 2FA login flow ...

Infinite saving loop with material attributes and VT

UDN: [Link Removed] ...

Custom HLSL's IncludeFilePaths should be injected into MaterialTemplate.ush

udn: [Link Removed] This appears to only be an issue with SN_DBS. DBS calls a function to gather all shader includes, and any custom hlsl includes aren't discovered causing that file to not be cop ...

Can't set "r.Shaders.Optimize" to false in UE5.4

The CVar "r.Shaders.Optimize" cannot be set to false from DefaultEngine.ini in the section "[ShaderCompiler]" as its help text describes. Also tested on UE5-Main, CL: 34200103 ...