A warning is needed for turning off "Update Navigation Automatically", large nav meshes can cause crashes

UE - AI - Jul 7, 2015

A warning is needed before allowing users to uncheck update Navigation Automatically. A user has done so and then created a nav mesh that was 1,000,000 by 1,000,000 in size and they can no longer op ...

Bug in ULevel::FixupActorFolders.

There is a potential bug in ULevel::FixupActorFolders() in the FixDuplicateFolders section: Suppose you have a folder hierarchy that looks like this:A B(1)B(2) C(1)B(3) C(2) where the letters ...

[CrashReport] UE4Editor_CoreUObject!UObjectBase::IsValidLowLevelFast() [uobjectbase.cpp:294]

UE - Foundation - Core - Aug 22, 2017

This is a common crash in the 4.16 and 4.17 releases. User DescriptionsWriting a custom component in C++. Hotcompiled it through VS2017. Had the BP editor open with a class derived from that compo ...

Meta Allowed Class Doesn't Allow All The Included Classes

Tools - Dec 24, 2019

The Meta Allowed Classes specifier doesn't allow the user to assign anything of the second type. Found in 4.24.1 CL#10757647 Reproduced in 4.23.1 CL#9631420, 4.25 Main CL#10868506 ...

Plugins are not creating shipping versions on package on Mac 4.23 Preview

UE - Foundation - Cpp Tools - Jul 15, 2019

When you try to package a plugin on Mac in 4.23.0 Preview 1 there is no Shipping folder generated. This was verified to not happen in 4.22.3 (via Epic Launcher). Found in 4.23.0 Preview 1 CL# 72363 ...

Pose assets do not snap to the pose when Additive is disabled

OLD - Anim - Oct 24, 2016

This is a regression from 4.13.1 as it was snapping to the pose then. If this was an intentional change please let us know and we can update the test case to reflect this. ...

Cannot delete Notifies from Anim Notify Manager

OLD - Anim - Jan 4, 2017

Cannot delete Notifies from Anim Notify Manager. Regression: YES Broken: 3224400 (4.14.1) Worked: 3172292 (4.13.2) ...

Traveling away from, then back to the original map in multi-process PIE with the editor as a client causes an assert

UE - Networking - Mar 28, 2016

An assert is triggered in this case because in multi-process PIE, if the editor is a client, the PIEInstance of the world context remains at -1 (see UEditorEngine::PlayInEditor). If this client inst ...

sphere collision with start and end points set to the same value return no hit objects

UE - Gameplay - Aug 29, 2016

Sphere collision with start and end points set to the same value return no hit objects. Workaround Set the end vector to 1 away from the start vector (0,0,0 to 1,1,1, etc.) Regression (no) issue ...

Stride Warping in manual mode not activating correctly based on first StrideScale

UE - MVF Character - Animation - Aug 15, 2022

From licensee: If StrideScale is 1 the first time through, it initialises the StrideScaleModifierState to 1 and doesn't require updating so leaves the CachedDeltaTime at 0 by never calling Update_I ...