Unreal Engine Issues
Unreal Engine Issues
Overridden mesh values are lost when upgrading from 5.5.0/5.5.1 to 5.5.2 on blueprint skeletal mesh components
UE - Anim - Runtime - Jan 30, 2025This issue is caused by the backout in 38341618. The original code that went into 5.0 affects serialization by changing the UCS modified properties. When upgrading, the override is lost because th ...
Performance issue with the material dock
TM - Tools - Oct 1, 2025See video. Tested on 2025.2 In a project where you have a lot of materials, it take a long time to open the material dock. Here around 20 seconds. And that's at each time you want to enter it. Y ...
Multi-Material Assets lose ability to assign individual actor Material Elements if one element has a Dynamic Material Assigned
UE - Gameplay - Blueprint - Jan 25, 2016When you have a multi-material mesh assigned to a blueprint in which one of the material elements is set to a Dynamic Material via the Construction Script, you lose the ability to set teh other elem ...
Physics are inconsistent between PIE and Standalone
UE - Simulation - Physics - Apr 16, 2015A user has found that they are seeing differences in how objects are affected by physics in Stand alone as apposed to PIE. While testing the amount of force applied to an object in the different pla ...
[CrashReport] UE4Editor_Landscape!ULandscapeInfo::UnregisterActor() [landscape.cpp:1856]
UE - LD & Modeling - Terrain - Landscape - Sep 21, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: LandscapeActor.I ...
Shadows of small movable components popping out
UE - Graphics Features - Jan 19, 2017This must be a regression ...
Blueprint fails to compile after adding local map variable element
UE - Gameplay - Blueprint - Oct 11, 2017When a map is added as a local variable for a blueprint function, the blueprint will failt o compile. Regression: No, same behavior occurs in 4.16.3 Workaround: Setting the key/value pair to int/i ...
Planar Reflections do not respect SkyLight intensity
UE - Graphics Features - Nov 14, 2017Planar Reflection actor does not reflect the intensity change of the SkyLight. In attached images, the Intensity of the SkyLight is set to 2. The darker area on the right is affected by the Plana ...
Sine Wave audio plays choppy in editor
UE - Audio - Dec 4, 2017Playing a sine wave as an audio sample in the editor produces a choppy sound when it does not outside of the editor. This issue does not appear to be a regression. Versions Tested: Issue occurs in ...
Normal are different after Merge Actor on scaled objects
OLD - Anim - Feb 8, 2018Normal are different after Merge Actor on scaled objects. If the actors aren't scaled, the issue doesn't seem to occur. A licensee is trying to use the Merge Actor tool to optimize their entire pro ...