Constant logging out?

Wondering if you've noticed this as well, or if it something wrong with my install... Compared with the hosted version of financier.io, I've noticed that my self-hosted app signs me out pretty much every time I come back to the tab after some time away, and I'll see "Sync error" if I don't logout and log back in again.

I don't see anything obvious in my logs besides the following, which shows up if I make a change and it tries to sync after I've been "silently" logged out (just generic "unauthorized" message):

couchdb_1             | [error] 2021-05-07T02:17:09.706189Z nonode@nohost <0.26337.89> cb57c9c621 req_err(2525593956) unknown_error : normal
couchdb_1             |     [<<"chttpd:catch_error/3 L353">>,<<"chttpd:handle_req_after_auth/2 L319">>,<<"chttpd:process_request/1 L300">>,<<"chttpd:handle_request_int/1 L240">>,<<"mochiweb_http:headers/6 L124">>,<<"proc_lib:init_p_do_apply/3 L247">>]

Any thoughts?