Unreal Engine Issues
Unreal Engine Issues
Crash when Applying Hole Material to Imported Tiled Landscape with World Composition
UE - LD & Modeling - Terrain - Landscape - Jun 11, 2015A crash occurs when importing a tiled landscape, via the 'Levels' window with World Composition enabled, and applying a material to the 'Hole Material' slot. You can also re-apply a default material ...
Linux client and listen server hangs on GameThread when decoding voice chat
UE - Networking - Sep 16, 2016The ShooterGame client on Linux stops responding when the Windows host presses the Push to Talk hotkey and speaks into the mic to activate VOIP. [2016.09.16-19.09.24:159][575]LogCore:Error: Hang de ...
[CrashReport] Linux crash - FVulkanCommandBufferManager::WaitForCmdBuffer
UE - Graphics Features - Aug 22, 2017This is a semi-common Linux crash coming out of 4.17.1. It is spread among a few different similar callstack affecting a handful of users. [Link Removed] [Link Removed] [Link Removed] [Link Removed ...
Set All Bodies Below Simulate Physics Only Causes Ragdoll Effect if it is Set to Root Bone
UE - Simulation - Physics - Sep 29, 2017-This functions in 4.16 -Physics will only simulate if the Third Person Character bone name variable is set to root -Physics does not affect any other bone -Make sure to plug in set in collision f ...
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 ...