Unreal Engine Issues
Unreal Engine Issues
Unable to fix up redirector of assets used in level instances
UE - World Creation - Worldbuilding Tools - Level Instances - Jun 12, 2024If another persistent level is open, the fix up can work. ...
check(PIEInstanceID != -1) fails when executing SeamlessTravel
UE - Gameplay - Mar 2, 2017Per https://udn.unrealengine.com/questions/349614/checkpieinstanceid-1-fails-when-executing-seamless.html ...
Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)
UE - Rendering - Architecture - Materials - Jun 25, 2024Shader Template files like MaterialTemplate.ush do not submit previous chunks when encountering a `%` character, unless that `%` character is `%s` or `% {...} `. Because the error is happening ...
Biquad Filter is incorrect when bandpass is 1.0
UE - Audio - Aug 20, 2024The bandwidth on the biquad loepass filter is cutting frequencies well below 20kHz when the bandwidth is 1.0. Slack convo: [Link Removed] Visualization:[Image Removed] ...
4.22.1 Crash in FVulkanResourceMultiBuffer::Lock
UE - Rendering - Architecture - RHI - Jul 31, 2019Vulkan Multibuffer Lock mechanism for ReadOnly does not appear to be implemented. Temporary workaround has been provided to licensee. ...
UnrealVS Windows 10 support - fix .NET version in manifest
Tools - Aug 4, 2015Seems like we should be specifying the .NET version like this guy's fix. ...
Assertion in a packaged build when Light propagation volume is set to 1
UE - Graphics Features - Sep 1, 2017Assertion in a packaged build when Light propagation volume is set to 1 ...
Niagara Data Interface "Errors and Warning" section on Module Details not updating when error messages change
UE - Niagara - Aug 14, 2025This is a regression: it worked correctly up to UE 5.5, but not in 5.6 or mainline latest. Possibly caused by CL 40093049. Class UNiagaraDataInterface provides virtual method GetFeedback(), which a ...
SVN 1.9 binaries aren't built to support SASL
Tools - Oct 4, 2016When the binaries for SVN were updated to version 1.9, they may have not been built to support SASL encryption. This is inconsistent with the old binaries, which did support SASL. ...
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 ...