Unreal Engine Issues
Unreal Engine Issues
Drag coefficient on vehicle blueprints affects forward and reverse differently
UE - Simulation - Physics - Mar 31, 2016Drag coefficient on vehicle blueprints affects forward and reverse differently. If in reverse, it seems to be additive or multiplicative to the vehicle's movement as opposed to providing any resista ...
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.
UE - Editor - UI Systems - Nov 28, 2024Currently, 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 ...
Importing FBX will override UV Channel 0 on Linux
UE - Platform - Linux - Jun 3, 2015Importing an FBX to the editor on Linux with "Generate Lightmap UVs" checked to true will override UV Channel 0 rather than creating the lightmap on a seperate UV channel. ...
Can Ever Affect Navigation Option Being Reset Upon PIE
UE - AI - Mar 29, 2016Upon PIE, the Can Ever Affect Navigation option is being reset on the capsule component of an empty character. Dragging the empty character into the level, setting the option to true, and then playi ...
BumpOffset Node Produces Incorrect Results When Texture Coordinate Index Is Not 0
UE - Graphics Features - Jan 18, 2019When using the BumpOffset node, it will produce incorrect resultsi if the Texture Coordinate Index is not 0. Found in 4.20 CL# 4369336. 4.21 CL# 4613538, 4.22 CL# 4751672 ...
GetDistanceAlongSplineAtSplinePoint becomes inaccurate as point approaches 0% or 100% of spline length
Tools - Sep 26, 2016When the USplineComponent::GetDistanceAlongSplineAtSplinePoint() function is called, the value returned is not accurate if the point approaches the range of 0 - 10 % or 90-100% of the spline. ...
UMG curve editor values are set to 0 when dragging a set value
UE - Editor - UI Systems - Jul 10, 2015An example of this issue would be that after setting the color and opacity setting along the time line and then trying to click and drag that key frame it will set the value for the currently select ...
With Pause Event on frame 0, sequence will never be able to resume playing
UE - Anim - Sequencer - Jun 13, 2017With Pause Event on frame 0, sequence will never be able to resume playing. It appears to trigger the event again. ...
Hair Shadows Not Affecting SSS Back Scattering (Subsurface Profile)
UE - Rendering - Graphics Features - Mar 30, 2026Groom strands do not appear to correctly block transmitted light for Subsurface Scattering Profile Materials. In some cases, not only will they not block the light, but can instead lead to more ligh ...
Gamepad input affects multiple game instances at once, due to not needing focus.
UE - Editor - UI Systems - Slate - Mar 5, 2019Since Gamepad input works without needing focus (which was added in 4.9 with [Link Removed]), a Gamepad's input will also affect all instances running on the same computer. Regression?: No This occ ...