Unreal Engine Issues
Unreal Engine Issues
Artifacts in imported GLB and GLTF files
TM - Interoperability - Mar 10, 2025Reported in SF [Link Removed] Client reports that many of their GLB and GLTF files they use appear with visual artifacts when imported to Twinmotion. These artifacts only appear in Twinmotion and n ...
Inconsistent events triggered by FlushProcessedKeys during keyboard hold input
UE - Gameplay - Input - Dec 20, 2024Key repeats from the OS do not affect the EnhancedInput normally, but it causes inconsistent event triggers when FlushProcessedKeys is called with holding a keyboard key down. Removing references t ...
Automatic Animation Compression Results in Crash
OLD - Anim - Dec 1, 2015Using the "Automatic" option to compress animation results in crash 100% in UE4.10 but does not occur in UE4.9.2. *Regression ...
SVN SASL binaries may be causing crashes for some users
Tools - Feb 21, 2017Some users are reporting crashes when attempting to connect to SVN after upgrading to 4.15. The only relevant change to SVN was the update of the 1.9 binaries to support SASL, so it's possible that ...
Lighting build fail due to failing to open channel for material data
UE - Graphics Features - Apr 21, 2017Licensee reports lighting build fails for their specific levels which were created in 4.14.1 then moved to 4.15.1. Workaround: Setting LogLightmassSolver verbose level to Warning can show "Warning ...
It is possible to get large Aspect Ratio values when using an Ultra-wide monitor on Linux
UE - Platform - Linux - Jul 22, 2019Attempting to use the Editor with a 32:9 Ultrawide monitor (5120x1440) causes the ratio sizes to be multiplied by 868.000000. ...
Widgets With Retainer Boxes Are Selected When Behind Widgets Without One
UE - Editor - UI Systems - Dec 24, 2019When a widget that has a retainer box is behind another widget that doesn't have one it will call it's onclick instead of the one in front of it in the UMG when clicked (see attached gif). This beh ...
Occlusion Culling incorrectly culling objects
UE - Graphics Features - Aug 26, 2020When playing in PIE/camera moving from left to right, pieces of the floor grid are culled out when they are not supposed to be. I was able to replicate this issue, however after I brought up the c ...
The Gradient Paint Tool In Cloth Simulation Doesn't Work On Mac
UE - Runtime - Deformable - Feb 28, 2020The Gradient Tool rotates the camera on Mac instead of painting the Gradient End Value. I wasn't able to test in Main on a Mac. There were no issues on Windows in 4.23.1, 4.24.3 and 4.26 Main. Foun ...
Clicking the Closed Loop check box for a Blueprint SplineComponent crashes the Editor.
Tools - May 12, 2015Clicking the Closed Loop option in a new Spline Component results in the Editor crashing. This only occurs in 4.8 Preview 1 (so far). 4.7.6 and Main appear to be working correctly. ...