Serialized Blueprints containing MIDs do not load correctly in packages.

UE - Rendering - Architecture - Materials - May 8, 2024

This issue is an easy fix but raises a different problem which is likely ingrained in UE, which is that MIDs should not be serialized out and should always be transient. Unfortunately we are in a po ...

[AI] AgentToNavDataMap still contains entries when cleaning up navigation system

UE - AI - Navigation - Jun 10, 2024

The navigation system has errors in the log for agents still being mapped to navigation data in CleanUp. This appears to stem from agent step height being recalculated in ARecastNavMesh::SetConfig i ...

Sequencer: Undoing creation of a new section can call section drawing code with viewmodel tree in invalid state

UE - Anim - Sequencer - Aug 1, 2024

The Section reference in ISequencerSection::GetSectionHeight can be in the process of garbage collection during an undo of a section addition- this causes things like GetTypedOuter<UMovieSceneTrack> ...

FMonitoredProcess does not properly support -nothreading mode

UE - Foundation - Core - Jan 19, 2017

For single threaded mode, we need to update FMonitoredProcess to handle processing in a single threaded fashion. Currently, we are continuing before the process has completed, which could result in ...

When Retargeting Animation, Mesh Set as Preview that Shares Skeleton Isn't Kept

OLD - Anim - May 25, 2018

When a preview mesh is set inside the skeleton(see attached screenshot) and saved and an animation retargeted to that skeleton, the preview mesh you changed it to is not displayed on the animation. ...

It's not clear that the user has to hold shift to preview in blend spaces

OLD - Anim - Nov 16, 2016

With the new blend space update, the user now has to hold down Shift to preview in the blend space graph. However there's no UI to tell the user that they need to hold shift, which can confuse vete ...

Launching to HTML5 creates an 'uncaught exception: out of memory'.

UE - Platform - Mobile - Oct 7, 2016

After updating Binary to the latest CL to bypass the HTML5 issues of 3149070, I ran into an HTML5 issue. Launching onto HTML5 Firefox opens a new window with the message 'uncaught exception: out of ...

Cannot move instances of a hierarchical static mesh component in the blueprint editor viewport

UE - Gameplay - Components - Apr 12, 2016

Can move individual mesh instances of a regular instanced mesh component in the blueprint editor, but not hierarchical ones. Originally reported as a pull request in [Link Removed], but we rejected ...

Overlap Issues using Tick Interval and Dedicated Server

UE - Simulation - Physics - Oct 28, 2019

When using a dedicated server and a class with an explicit Tick Interval set, if the class' overlaps are updated in the begin overlap event, in a non-consequential way(changing collision profile in ...

Using GameCenter from iOS15 onwards requires a plist entitlement key

UE - Platform - Apple - Dec 6, 2023

Apple added a new Entitlement plist value starting with iOS15 to allow connecting with GameCenter.  It's a boolean value with the key: com.apple.developer.game-center Without it, the app can not co ...