Unreal Engine Issues
Unreal Engine Issues
Crash when Undoing the change to a default class setting for widgets
UE - Editor - UI Systems - Sep 25, 2017The editor crashes when trying to undo a default class change for a child widget after that widget has been compiled. This did not happen in 4.16, it appears to be a regression. ...
Instance Static Meshes spawned at Runtime do not have collision
UE - Gameplay - May 8, 2015Spawning an Instance Static Mesh at runtime does not have collision. This issue appears only in 4.8 Preview 1 and the 4.8 Release branch (tested on CL-2540862), but is fixed in Main Branch as of Ma ...
Crash when attempting to revert a Child blueprint from overriding its parent's function while it also has a child of its own
Tools - Dec 4, 2017When reverting the change of overriding a function from a blueprint's parent, the editor will crash if that blueprint has a child of its own. Regression?: No This also occurred in 4.16 ...
AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving
UE - AI - Oct 4, 2016AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...
Stationary Lights are causing shadowing errors with Movable Objects
UE - Graphics Features - Feb 11, 2015Stationary Lights are generating shadows with flickering black square and vanish shadows altogether on movable objects in the Preview of 4.7p6 and in the newest Release Branch of 4.7 (2439472). The ...
City Sample - Parked Cars, Traffic, and Crowds do not spawn while in PIE
UE - Engine Scaling - Mass - May 1, 2023Repro Rate 10/10 Issue is a Regression as it doesn't occur in 5.1 Parked Cars, Traffic, and Crowds spawn in as expected when launching the project in Game Mode or a Packaged Build Going into the ...
Dragging the Translation Widget in Perspective Viewport on Mac in a second monitor does not translate the selected Actor
UE - Platform - Apple - Nov 11, 2014Dragging the Translation Widget in Perspective Viewport on Mac does not translate the selected Actor, and when dragging is released the cursor is moved to the top left corner of the Viewport. Happen ...
Expanding a folder in the Finder through the editor will crash the editor
UE - Platform - Apple - Mar 16, 2015Expanding a folder in the Finder through the editor will crash the editor. Reproduced in 4.7.2 binary on 10.9.5 Crash Report: [Link Removed] ...
Specifying a custom UMovementComponent class via SetDefaultSubobjectClass() does not seem to serialize default value edits correctly on the CDO.
UE - Foundation - Core - Oct 28, 2015Possibly some sort of issue related to SetDefaultSubobjectClass() rather than UMovementComponent specifically. I was able to reproduce in 4.10 release branch and in //UE4/Main with the test project ...
UMG Animations on existing widgets break when loading new level
UE - Editor - UI Systems - Jan 14, 2021Marking as a regression as this does not occur in 4.25.4 User description: I want to have UMG UI that persists for the lifetime of the game so I create my root widget and add it to the viewport fr ...