Unreal Engine Issues
Unreal Engine Issues
VoIP loses functionality when transitioning levels.
UE - Online - Oct 23, 2019VoIP between client and host is lost upon transitioning levels. ...
Collision lost from body when using world composition and streaming
UE - Runtime - Simulation - Mar 1, 2021Physics object from a streamed level does not interact with other physics objects in persistent level. ...
Moving a water body causes engine to drop fps and spike ms
UE - Graphics Tools - Terrain - Water - Apr 26, 2022Moving a water body lowers performance on the engine. The fps drop from 120 to 30 and ms spike from 8 to 30. This issue occurs in 5.0 Binary and 4.27 Binary on Windows. On Mac, FPS drop and ms spike ...
Merging Splines causes Engine to Crash in 5.1
UE - World Creation - Worldbuilding Tools - Merge Actor - Dec 15, 2022Attempting to merge two spline actors causes the Engine to crash. This issue occurs with the Steps to Reproduce regardless if there are more branches added to the tree branch spline/enabled, and reg ...
UObject set to DefaultToInstanced will show all properties declared at the blueprint level, even in they're private and not instance editable
UE - Editor - Verse Class Editor - Apr 19, 2024Licensee found that when creating a UObject class with DefaultToInstanced and EditInLineNew specified, and then a derived BP was created using the UObject class and used as a variable type in an act ...
xCrash at startup when vcomp140.dll prerequisite is missing.
TM - Interoperability - May 3, 2024Some users are experiencing a Crash at startup because of missing vcomp140.dll prerequisite. ...
[PCG] Undoing the deletion of a pcg actor removes the Instance Category from the pcg component, specifically no graph parameter can be seen.
UE - Graphics Tools - PCG - Components - Oct 31, 2025Context: PCGComponents on actors contains a category "Instance" that allows the user to connect a PCG Graph of their choosing to the PCGComponent which allows the Procedural Node Graph to sample the ...
Reflections of Masked Materials incorrect with Lumen HWRT and Max Refraction Bounces > 0
UE - Rendering - Graphics Features - Lumen - Dec 18, 2025Lumen HWRT Reflections of Masked Materials are incorrect when "r.Lumen.Reflections.HardwareRayTracing.Translucent.MaxRefractionBounces" is greater than 0. The same issue occurs if the Post-Process V ...
FCameraShakePreviewer retains world-outered UCameraShakeBase instances indefinitely, fataling CheckForWorldGCLeaks on editor map change
UE - ACT Character - Sequencer - Aug 21, 2026FCameraShakePreviewer is an FGCObject that strongly references the UCameraShakeBase instances it previews, and creates them outered to the previewed UWorld. Nothing releases them on world teardown, ...
LIVE: Control+Right (Skip Word) in Multi-Line Text Field Freezes Editor
Tools - Oct 30, 2014In any multi-line text field, scrolling to the end of the last line with the control+right (skip word) command will freeze the editor. In the AnswerHub thread, user twiddle linked to a Pull Request ...