Confirmed: Same problem here for nextCloud and for google accounts.
Gnome files says "Unable to access [email protected] Invalid
credentials for [email protected]".
Same for nextCloud accounts. goa-daemon says
"/org/gnome/OnlineAccounts/Accounts/account_1706819076_1: Setting
AttentionNeeded to TRUE
because EnsureCredentials() failed with: Invalid password with
username “username” (goa-error-quark, 4): Authentication failed (goa-e
rror-quark, 4)
I can remove the accounts and re-add them. But then they don't work with
gnome-online-accounts 3.46.0-1 (Debian stable machine where same home
dir is mounted). There, I can remove them and re-add them. But changing
to 3.49.0-1 from testing all starts over again.
Seems like compatibility broke badly.