Certain UPROPERTY values are not updated during auto-recompile

UE - Gameplay - Blueprint - Aug 4, 2016

Sometimes manual recompile is required to make a blueprint actually recompile data-only changes, but not always. If the last manual compile was with default values, then changes are not updated. If ...

Crash when rotating and resizing a Background Blur widget

UE - Editor - UI Systems - Feb 16, 2017

If the user rotates a background blur widget and then tries to resize it, this will cause the editor to crash Note: Widget cannot be opened if the widget is saved in this state. ...

Crash: Opening Project Browser from Launcher with VR Mode auto-entry enabled with HMD active (worn)

UE - Editor - Workflow Systems - Apr 24, 2017

If you enable VR Mode auto entry, close the project, and then attempt to launch the engine again from the Binary launcher while the HMD is active (being Worn), the Project Browser will crash ...

Crash when changing the Codec in a curve compression setting

UE - Anim - Runtime - Nov 15, 2021

The crash will occur when changing the Codec in a curve compression setting. This is a regression do it not happening in 4.26.2.. ...

Crash when creating deferred decal material when using -d3ddebug command line argument to launch editor

UE - Graphics Features - Jul 18, 2016

Discovered this while verifying [Link Removed]. Devs informed me of a command line argument that could be used to output D3D11 debug information and using it caused crashes in both //UE4/Main @ CL 3 ...

MoviePipeline: HighRes Tiling feature crashes at high resolutions

UE - Anim - Sequencer - MRQ - Jan 4, 2023

If you run with -rdgimmediate -onethread you can get the callstack that indicates that MRQ is still attempting to allocate the full sized texture and not the individual tile size. ...

Linux crash on Import

UE - Platform - Linux - Jun 2, 2016

Attempting to import content into a project causes the editor to crash on Linux ...

Setting multiple identical actors to replicate movement will crash on PIE with multiple players

UE - Networking - Jan 28, 2015

If ten or more of the same actor in a level have the "replicate movement" checkbox set to true, the editor will crash on PIE if the number of players is set to 2 (or with 1/2/3 players if dedicated ...

Crash when unloading Lighting Scenario Streaming Level

UE - Graphics Features - Nov 16, 2016

If a sub-level is set as a Lighting Scenario in the Levels tab, calling Unload Stream Level will cause standalone / packaged games to crash. Regression: No - Lighting Scenario not available before ...

Crash After cutting and pasting a blend radius track in sequencer

UE - Anim - Sequencer - Oct 27, 2017

Crash After cutting and pasting a blend radius track in sequencer ...