UE5.8.1 - Editor stuttering when closing Blueprints or the engine.

Summary

Sometimes, the editor stutters for a few seconds when closing a blueprint window or the engine.

What Type of Bug are you experiencing?

Editor

Steps to Reproduce

C++ project (The Blueprint project has not been tested) with some plugins, EditorPreferences-AssetEditorOpenLocation-MainWindow, SaveOnCompile-OnSuccessOnly or Always. After some time or maybe restart a few times, open some blueprints or data assets, then close them one by one or close several of them at once. It also happens on close the engine.

Expected Result

The blueprint window should be closed immediately.

Observed Result

sometimes, the editor stutters for a few seconds when closing a blueprint window, closing the engine can result in an even longer stutter. Deleting the Saved folder of the project can temporarily resolve this issue.

Affects Versions

5.8

Platform(s)

Windows

Additional Notes

I didn’t encounter this issue in previous versions.