Unreal Engine Issues
Unreal Engine Issues
Play Rates are not reverted when HAP Media Plugin is disabled
Media Framework - Nov 11, 2019Enabling the HAP Media player plugin permanently affects the thinned Play Rates of the Media Player asset. Tested in 4.23.1 (CL - 9631420), 4.24.0 (CL - 10091930), 4.25 (CL - 10091038) ...
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. ...
Local variables in Blueprint functions don't support default values of Custom Structs
UE - Gameplay - Blueprint - Jun 9, 2015I make a custom struct and assign default values to it's member floats, etc. When I use that in a Blueprint, the defaults work as expected. However, when I reference it as a local variable in a BP f ...
Crash when exporting static mesh actor to FBX (Array index out of bounds)
UE - Editor - Content Pipeline - FBX - Apr 25, 2025I set the Forced LOD Model on the mesh component > 1, then tried to export, this is what causes the crash. Here is my suggested fix, we just don't use Git or I'd do a PR: In the else() branch of FF ...
Level Sequence option "Allow Level Edits Only" causes Frame Rate drop when used
UE - Anim - Sequencer - Aug 15, 2017When using the new option "Allow Level Edits Only" there is a drastic frame rate drop while playing the sequencer. This frame rate drops when only using this option. Versions Tested: 4.16.3 - CL: 3 ...
Crash duplicating or deleting any component inside of Actor BP if lights or triggers are present
UE - Gameplay - Blueprint Editor - Apr 25, 2017When duplicating or deleting a component whilst a point light is also a component within an Actor BP, the editor crashes. See callstack for info. This is a regression. Working: 4.15.2 Broken: 4.16 ...
Final Gather Quality Post Process setting causes severe rendering issues in the Stack-O-Bot project
UE - Graphics Features - Lumen - Feb 24, 2022When opening the Stack-O-Bot project in 5.0 Preview 1, the project has a rendering issue where bright shimmering lights appear all around the screen. I discovered that this is due to the PostProcess ...
Post Process volume change Unable to PIE and Crash
Tools - May 30, 2017There is a compound issue with using the post process volume. Editing the value by using the mouse or dragging on the color wheel does not trigger this issue. Using the keyboard to edit this value c ...
[CrashReport] Linux crash - FStatsThreadState::ProcessNonFrameStats
UE - Platform - Linux - Sep 21, 2017This is a somewhat common Linux crash that has occurred since 4.16. The callstack shares some similarities to [Link Removed] ...
ImportAssets commandlet failing to create assets in project
UE - Editor - Content Pipeline - Import and Export - Mar 14, 2017There are no errors or warnings in the console output or logs that suggest anything went wrong. Also attempted to import a .PNG with no luck. Exact command used, use of <user> where appropriate:UE4 ...