Unreal Engine Issues
Unreal Engine Issues
Widget that is a derived from a child widget reports component variables as Invalid
UE - Editor - UI Systems - Aug 23, 2023This is not a regression. Tested in //UE5/Release-5.2 CL26001984 A widget that is a derived from a child widget reports component variables as Invalid, while the child and parent of that child will ...
[AI] Area Class to Replace does not work on SplineNavModifierComponent
UE - AI - Navigation - Jun 16, 2025The SplineNavModifierComponent does not have the same behavior as regular nav modifier components where the modifier can specify that it only replaces a given NavArea class. Setting the area class t ...
Adding an Event Dispatcher to a Template Character Blueprint Causes Increase in Compile Time
UE - Gameplay - Blueprint - Jul 8, 2016Adding an event dispatcher to one of the pre-created character blueprints in the template projects causes an increase in compile times. This does not occur with a blank actor or character blueprint ...
Execute while paused input action mappings do not execute when console command pause used
UE - Gameplay - Input - Jul 28, 2016"Execute while paused" input action mappings do not trigger when using the pause console command. Workaround Use the "Set Game Paused" node, which works as expected. Regression (no) issue (does ...
Adjusting color picker value for color structs within a structure crashes editor
UE - Gameplay - Blueprint - Aug 1, 2016Attempting to adjust the value of a color struct via the color picker in structures crashes the editor. Frequency: 3/3 CrashReporter: [Link Removed] Regression (Yes) issue (does not) occur in 4. ...
Move 'Scale is not valid' warning to MessageLog to make it more noticeable.
UE - Foundation - Core - Aug 30, 2016Memory leak when comparing scale value with 0 on transform. It appears that the memory used by the editor increases by 25-50 mbs while comparing the scale to 0. Regression (no) issue (does) occur ...
Anim BP Class Defaults are deselected on compile
OLD - Anim - Nov 9, 2016If the Class Defaults are selected when compiling an animation blueprint, the will be deselected and the user will be required to select them again. This doesn't occur with anim blueprint nodes. A ...
Collapse All/Expand All not functioning as expected
Tools - Nov 2, 2016This is only happening in the Editor Preferences/Project Settings. Hitting the Collapse All option removes everything and leaves the window blank where all of the settings were. Expand all brings th ...
Investigate intermittent crash in CacheOptimizeIndexBuffer on Editor startup on Linux
UE - Platform - Linux - Nov 23, 2015Building 4.10 from the GitHub release branch on Linux fails to open after install and instead crashes Community Suggested Fix: Switching triangle order optimization off with r.TriangleOrderOptimiza ...
Precomputed AO Masks cannot be used to LERP between Normal Maps
UE - Graphics Features - Sep 18, 2015When using the Precomputed AO Map node to LERP between 2 Normals, only the A input into LERP will render out on the mesh. The Precomputed AO will work fine for Base Color LERPs Example: [Image Re ...