If you enter the wrong the password for a wifi network, it just says configuring interface and doesn`t tell you that the password is incorrect and couldn`t connect.
I am afraid I can't reproduce it, if I enter a wrong password, a dialog opens prompting me for a password. The same happens if I enter a wrong password that dialog.
Maybe you can give more details (including networkmanager version)?
I also get the dialog eventually, but it takes like 30 seconds. NetworkManager 1.44.2.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-nm/-/merge_requests/312
Git commit 2ca168be630d394066697d4ab26909a9d54c1a06 by David Redondo. Committed on 11/12/2023 at 16:15. Pushed by davidre into branch 'master'. If the user provided password was incorrect say so in the dialog RequestNew is documented as "This flag signals that NetworkManager thinks any existing secrets are invalid or wrong". We can use this information to show a better string. M +11 -2 kded/passworddialog.cpp https://invent.kde.org/plasma/plasma-nm/-/commit/2ca168be630d394066697d4ab26909a9d54c1a06
From my perspective, this is fully fixed by the above commit. Thanks David!