Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Assertion failed: NewWorld | UE4Editor_Engine!UEngine::LoadMap()
UE - Gameplay - Nov 2, 2017This is a common and longstanding crash that has occurred since at least 4.15. Originally this was being tracked under [Link Removed] due to sharing the same callstack, but that had specific repro ...
MediaTexture do not show video when playing a movie using Media Player in some Android devices.
Media Framework - Feb 13, 2018Movie Player do not seems to play movie in some android devices. [Link Removed] You can simply run the attached project in android devices to see the movie is played as expected. ...
Crash Opening Editor with Vulkan - Fatal Error - RenderingThread.cpp
UE - Rendering Architecture - RHI - Mar 15, 2019Editor crashes when opening to project browser on Linux. Fatal error: [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 819] Rendering thread exceptio ...
Replace with child on subtree of the NamedSlot is broken after reloading a widget.
UE - Editor - UI Systems - Apr 5, 2021"Replace with child" does not work well with the NamedSlot widget after reloading the widget blueprint in Contents Browser. ...
Masked material using virtual textures covering a decal will result in black pixels
UE - Graphics Features - Nanite - Mar 31, 2025Depth Passes for Masked Materials using Virtual Textures does not work correctly when it is in front of a Nanite Mesh and a Decal, resulting in black artifacts. Also tested on //UE5/Main, CL: 41024 ...
Changes to Instanced Properties default value on BP not propagated to placed actors in the opened level
UE - Foundation - May 15, 2025In UE versions 5.4 and onwards (as of CL 42589677 in Main), when an Instanced UObject property is defined in an Actor Blueprint, modifying the default value in the Blueprint does not propagate the c ...
Revision Control > View Changes: Request for changes to Revert File and Unsaved options
UE - Editor - Workflow Systems - Sep 22, 20251. Objects in the Unsaved list cannot be discarded, only saved. The only options to discard changes are restarting UE or manually locating each resource and clicking Reload. This becomes extremely c ...
Package fails after adding DesktopPlatform to public module dependency list
UE - Foundation - Core - Apr 6, 2017Adding DesktopPlatform to the PublicDependencyModuleNames.AddRange() section of the Project.Build.cs file causes the project to fail packaging with the following error (full package logs in callstac ...
Crash on checking event track key property after setting static mesh reference element
UE - Anim - Sequencer - Oct 19, 2017Event track key with a structure containing staticmesh reference. Setting the staticmesh then reopening the property crashed the editor. ...
Changing transforms to absolute in parent blueprint does not propagate to child blueprints in the level
UE - Gameplay - Blueprint - Oct 26, 2015If the transforms for a blueprint component are changed to "absolute" location and/or rotation, new child blueprints created will correctly show the absolute location/rotation changes, but the child ...