After updating to chromium-84.0.4147.135 (on recent FreeBSD 12.1), chrome's password store is inaccessible and unusable:
chrome does not display any previously saved password anymore. New passwords can be saved, but never make it into the store, so they are lost after logging out of any authenticated session.
Strange enough, I can clearly see all old saved logins still residing in .config/chromium/Default/Login\ Data
So they are still there, chrome is just unable to access them.
This fits with the following error messages chrome displays when started via terminal:
zsh/2 257 % chrome
[3900:343401728:1111/152850.098231:ERROR:token_service_table.cc(140)] Failed to decrypt token for service AccountId-100167830398711330418
[3903:286974976:1111/152852.586476:ERROR:ssl_client_socket_impl.cc(959)] handshake failed; returned -1, SSL error code 1, net_error -202
[3903:286974976:1111/152852.980397:ERROR:ssl_client_socket_impl.cc(959)] handshake failed; returned -1, SSL error code 1, net_error -202
I searched for these through the web, but found nothing that helped so far.