Unreal Engine Issues
Unreal Engine Issues
All public inline methods of class "FBlueprintEditor" are inaccessible to other modules due to "DLLIMPORT"
UE - Framework - Blueprint Editor - Jun 28, 2024Class "FBlueprintEditor" has several inline getter methods as part of its public API (e.g. GetPreviewActor() and GetPreviewScene()). However, even though they are public, those methods are inaccessi ...
COM Media Type error in video writer on 8K videos
TM - Rendering - Dec 12, 2024360 videos set to 8K resolution will fail to render in Twinmotion 2024.1.2 and newer Render attempts will end abruptly shortly after being initiated with the following error message ion the logs L ...
The CTRL+S shortcut does not save an opened Sequence it the Sequencer Window is undocked
zComponent - Archive - Jul 29, 2025The CTRL+S shortcut does not save an opened Sequence it the Sequencer Window is undocked. Docking the Sequencer Window to the main window fixes the issue. I've reproduced the behavior on UE versions ...
Recorded sequences create broken "Visibility" tracks instead of "Hidden in Game" Tracks
UE - Anim - Sequencer - Jun 19, 2017Recorded sequences create "Visibility" tracks instead of "Hidden in Game" Tracks. "Visibility" tracks appear to be legacy tracks that you can't create anymore, but is still created by Sequence Reco ...
[CrashReport] UE4Editor_Foliage!FMulticastDelegateBase<FWeakObjectPtr>::AddInternal() [multicastdelegatebase.h:113]
UE - World Creation - Worldbuilding Tools - Foliage - Jul 6, 2017This is a common crash in the 4.16 release. The callstack is similar to [Link Removed], but that was fixed in 4.16.2 while this crash still occurs. Users have not provided any additional informati ...
Characters using NavWalking on server have noticeable jitter on clients at lower framerates
UE - AI - Aug 23, 2018AI nav walking doesn't allow clients to set a "Base" for the character (SetBase from UpdateFloorFromAdjustment), so there is no floor result on frames where there is a net update. This causes simula ...
Crash when generating mip maps for texture
UE - Graphics Features - Dec 23, 2019Generating mip maps results in crash and seems to duplicated 1x1 mip level. NOTE: The bug was originally reported in 4.23.1, however, for some reason I was able to open the texture in 4.23.1 afte ...
Unable to Import Alembic Files in UE4
UE - Editor - Content Pipeline - Import and Export - Feb 25, 2020We have written a plugin for UE4 that allows Unreal users to import and set up Megascans assets into Unreal Engine. Recently we added Alembic files to our assets and also updated all our plugins to ...
Regular UMG Widgets can be reparented to editor widgets but do not work.
Tools - May 11, 2020This may just need to be closed, we may not be able to control this at such a level. This really comes up more than you would guess. I think almost everyone has made a widget, wanted to call Edito ...
CopyTask in BuildGraph never throws an exception if the copy fails
Tech - BuildOps - Tools - Feb 28, 2023CopyFile function in CommandUtils.cs assumes that an exception will be thrown if the number of retries is exceeded, but the loop condition prevents it from being thrown. Following fix works:publics ...