Please, bring back the "Microsoft Edge rounded corners" option

Hello

As of today, the "Microsoft Edge rounded corners" flag in edge://flags/ no longer works (the option is disabled to revert to the old appearance).

Since Microsoft no longer gives users a choice in appearance, they're trying to force us to switch browsers... ??
No more option to hide the Extensions button in the toolbar, a display bug for over a month regarding the color of the buttons in the title bar (black instead of white like in Windows), etc...

Please MS, bring back this option

And is there an "flag" (to add to the shortcut, for example) to restore the old appearance ?

Thanks