Safari doesn't accept redirects that point to a section.
The "thanks" URLs now look like this:
https://office.wikimedia.org/w/index.php?title=Village_pump&workflow=swgyj4wea32gwwrm#flow-post-swgyj4wfu9h5d5gi
which ought to redirect to this:
https://office.wikimedia.org/wiki/Topic:Swgyj4wea32gwwrm#flow-post-swgyj4wfu9h5d5gi
but which actually end up here in Safari:
https://office.wikimedia.org/wiki/Topic:Swgyj4wea32gwwrm

(Reported at https://office.wikimedia.org/wiki/Topic:Swpsv0i1iygazd4s)
(confirmed that it works properly (as expected) in Firefox/Chromium)