Widget that is a derived from a child widget reports component variables as Invalid

UE - Editor - UI Systems - Aug 23, 2023

This 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, 2025

The 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 ...

Crash deleting skeleton when it's being used in current level

OLD - Anim - Sep 6, 2016

Crash occurs when the user deletes a skeleton while it is being used in the current level. If the skeleton is not in the loaded level, the crash will not occur. ...

Adding an Event Dispatcher to a Template Character Blueprint Causes Increase in Compile Time

UE - Gameplay - Blueprint - Jul 8, 2016

Adding 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, 2016

Attempting 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. ...

User is able to merge a single actor

UE - Gameplay - Aug 5, 2016

User is able to merge a single actor using the Merge Actor tool. This is a regression as you could not merge a single actor in 4.12. Not sure if this was an intended change or not. Occurring in 4. ...

Move 'Scale is not valid' warning to MessageLog to make it more noticeable.

UE - Foundation - Core - Aug 30, 2016

Memory 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 ...

Markup in Tutorial Texts Not Being Displayed Correctly

Tools - Sep 19, 2016

Text in the tutorials is not being displayed properly. Instead, the XML markup is being shown as displayed in the attached screenshot. This does not occur in 4.12.5, and is a regression. This occ ...

Investigate intermittent crash in CacheOptimizeIndexBuffer on Editor startup on Linux

UE - Platform - Linux - Nov 23, 2015

Building 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 ...