You can get
as reference file.
on my setup, it freezes for > 15s when i press the auto format shortcut, and yes, it's also slow on the 2nd formatting.
I have tried to disable all third party plugins, but it doesn't seem to have any effect.
Currently, i play a little with the editor, for now i have only the following issue on the screenshot
(The auto indentation doesn't work as excepted like the default editor):