Unreal Engine Issues

Sequencer auto-generated thumbnails should not replace manually-catpured thumbnails.

bIgnoreAllPressedKeysUntilReleaseOnRebuild in Enhanced Input behaves unexpectedly during pawn possession

This is a speculative bug report from the user.  The fix for this is to re-do the work of 31224705 but in a better way. The "bShouldBeIgnored" flag is being overriden by the previous mapping's va ...

Certain Projects crashes on Start AR on iOS

Repro rate 5/5 Project crashes on pressing "Start AR" in ARDebugCheck, on "Begin Scan" in Handheld AR Template and on "Start AR" in ARImageDetection. Issue also occurs on ARVideoSettings and ARSave ...

Niagara Scalability Crash When Processing Significance

Method FNiagaraScalabilityManager::ProcessSignificance() iterates on indices from Context.SignificanceIndices and uses them to access the State and ManagedComponents arrays. It can then decide to cr ...

StructUtils plugin's `FInstancedStruct` in a CPP-defined struct in a `TArray` on an actor component defined in CPP and implemented in BP. Populating the instanced struct in an actor BP's class defaults breaks serialization of the class defaults.

Context Instanced structs are great for holding simple data with the main advantage they have is a low memory overhead unlike instanced objects. Problem The problem is in StructUtils plugin's `FIns ...

MRQ - No Rayrtaced Shadows casted from Groom Caches with only 1 Spatial Sample

A groom cache will not cast a raytraced shadow with only 1 spatial sample. It does not matter how many temporal samples you have. ...

Keyboard Shortcuts don't work on the Outliner Window if it is detached from the Main Window

Keyboard Shortcuts don't work on the Outliner Window if it is detached from the Main Window. As described in Steps To Reproduce, as soon as the Outliner Window is detached from the Main Window, most ...

USkeletalMesh::Serialize should preload dependent skeleton

In the skeletal mesh serialize method, we rebuild the ref skeleton for the mesh via this call:GetRefSkeleton().RebuildRefSkeleton(GetSkeleton(), bRebuildNameMap); So there's a dependency on the ske ...

World Source in Take Recorder does not record auto-tracked actors properly

The Take Recorder plugin allows for multiple sources to be recorded during gameplay. The World Source is expected to record everything in the level when the Autotrack Actors option is enabled. Once ...

Toast Notifications Steal Focus Causing Unreal Editor Submenus to Disappear during Navigation on Linux

Sub-menus disappear when using Linux in a remote session in launcher build of UE Release 5.5.4. ...