Unreal Engine Issues
Unreal Engine Issues
Merging Splines causes Engine to Crash in 5.1
UE - World Creation - Worldbuilding Tools - Merge Actor - Dec 15, 2022Attempting to merge two spline actors causes the Engine to crash. This issue occurs with the Steps to Reproduce regardless if there are more branches added to the tree branch spline/enabled, and reg ...
When "Support Material Layers" is Enabled Material Instance Parameter Values Reset to Default Value When Override is Unchecked
UE - Graphics Features - Jul 14, 2018If "Support Material Layers" is enabled, every time you uncheck an overridden parameter box in a material instance the value of that parameter will reset to its parent's default value instead of sta ...
BP hierarchy change triggers incorrect map actor load warning: AttachTo: '{0}' is not static {1}, cannot attach '{2}' which is static to it.
UE - Gameplay - Blueprint - Apr 11, 2024When a blueprint's component hierarchy is changed by changing a child component's mobility value to Static while deleting its parent component which has Movable mobility, levels saved with an outdat ...
Point Cloud support for AR plugin crash
UE - Platform - XR - Nov 21, 2019Enabling Point Cloud support for AR plugin causes engine crash. Also crashes with LIDAR plugin enabled. Confirmed in MAIN 4.25 @ CL 10333042 ...
Android movie player doesn't work with ES 3.1
UE - Platform - Mobile - Jul 27, 2017Niether movie playback Startup Movies Play on ES3.1 ...
Add support for Debug Persistent Foreground Line Batcher
UE - Anim - Rigging - Control Rig - Jan 7, 2025Foreground debug lines are cleared each frame and as a result, dissapear when PIE is paused (even if no persistence is supported, the lines sould be drawn if PIE is paused). We need support for pers ...
Investigate adding support for more flexible condition properties in the Material Editor.
UE - Rendering Architecture - Materials - Feb 23, 2023The user has added a property to material expressions input node that has a complex expression in its "EditCondition" which isn't supported and results in a crash. Investigate adding support to thi ...
VR Preview crashes when the number of players is greater than one
UE - Platform - XR - Aug 18, 2015If the user has the number of players set to more than one, the VR preview will crash. ...
Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc
UE - Gameplay - Blueprint - Sep 1, 2015Enum to Byte conversion returns 2 for the first enum then 4 then 6 and so on rather than 0, 1, 2, etc. This is a regression; does NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2675088) ...
FBX files with multiple Meshes with only 1 unwrap per mesh will have invalid Light Map coordinates assigned
Tools - Jun 8, 2014An FBX with Multiple Meshes and only one unwrap per mesh (no 2nd UV channel) will import the first mesh in the file correctly but will produce invalid lightmass settings on each additional mesh impo ...