Unreal Engine Issues
Unreal Engine Issues
Specular Scale 0 on Light still affects Groom asset
UE - Rendering Architecture - Jul 30, 2025When a light's Specular Scale is set to 0, the specular still affects hair / groom assets. The specular of other assets (like a shiny static mesh in the scene) is properly affected by the change. ...
10 or more Static Meshes set to Simulate Physics and Replicates Movement will crash the editor with PIE set to 2 or more players
UE - Networking - May 19, 201510 or more Static Meshes set to Simulate Physics and Replicates Movement will crash the editor with PIE set to 2 or more players. Less than 10 don't cause a crash. The user reporting this got a mor ...
Macros with 2 wildcards - first type sets other wildcard
UE - Gameplay - Blueprint - Mar 31, 2015https://udn.unrealengine.com/questions/240869/macros-with-2-wildcards-first-type-sets-other-wild.html ...
Window position is broken when using Windows 7 WINVER.
Tools - Aug 6, 2015A user reported that the Window Position calculation is incorrect with Windows 7 WINVER. The source code appears to be using the calculated left value for the left side of the window, but the calcul ...
Materials with Subsurface Profile not affected by Opacity value
UE - Graphics Features - Oct 24, 2017A material with Shading Model set to Subsurface Profile is no longer affected by Opacity value in 4.17, 4.18, and 4.19 (Main) but was previously working as intended in 4.16. This is a regression. ...
Reducing Resolution Scale affects Selection Accuracy in Viewport
UE - Graphics Features - Nov 17, 2015When reducing the Resolution Scale the selection accuracy is reduced greatly, and makes it difficult to click and move objects in the viewport when PIE or Simulating. ...
Running a server from the editor will crash this project
UE - Networking - Mar 8, 2015Running a server from the editor will crash this project. Reproduced by using UE4Editor <projectname> -server -log to run the editor. This does not occur with a new project in 4.7.2 or in Main. ...
Material accuracy on iPhoneX is significantly inferior compared to iPhone 7
UE - Platform - Mobile - Feb 13, 2019The accuracy of World Position and Camera Position in Material on iPhoneX is very inferior to iPhone 7. If you enable UseFullPrecision the result will be the same. ...
GPU Particles flicker when using 2 Nvidia GPUs in SLI
UE - Graphics Features - Jan 20, 2017Pick any game with GPU particles. Set the executable to run AFR mode 2 from Nvidia control panel. Look at GPU particles. ...
Unreal Remote 2 does not send information about motion control
UE - Platform - Mobile - Aug 25, 2018Unreal Remote 2 does not give information on motion control to PC. This is different from the description of the application. Use this application alongside Unreal Engine to view and control the de ...