Unreal Engine Issues
Unreal Engine Issues
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. ...
StopAtCurrentTime Node Sets Playback Position To 0.f In Level Sequence Actors
UE - Anim - Sequencer - Jan 20, 2020Level Sequence actors have their current playback time to 0.f when using the StopAtCurrentTimeNode. In MovieSceneSequencePlayer.cpp line 288 TimeToResetTo is set to 0.f. Attached is a 4.24 example ...
Child Animation Blueprints Do Not Get Recompiled Correctly
UE - Gameplay - Jan 7, 2020The child of an animation blueprint is not properly recompiled when the it's parent is compiled. Found in 4.24.1 CL#10757647 ...
The speed of Animators is increased in exports
TM - Tools - Jun 23, 2026Reported in SF [Link Removed] When setting Animator tools to use Collision mode for video, the loop speed of the animator will be twice as fast as specified in the video export. Attached a sample ...
Mouse Wheel Axis input gives different values in HTML5 packages, varying by browser
UE - Platform - Mobile - Sep 28, 2017The value given by the Mouse Wheel Axis is usually 1.0 or -1.0, depending on the direction. In HTML5 packages, this value varies based off the browser that is used. On Firefox (56.0): 0.025 or -0.0 ...