Hi @asmecher ,
I am using PHP 8.1.20 with the following configuration
I have another subdomain where I am still running OJS 3.3.0.14 with the same configuration as above and I never encountered any issues. Before writing this post, I tested all these functions once again (the author can start the discussion and the editor can use the “Notify” function) on this test domain and I found it is working perfectly.
Hope it helps to figure out why PHP behaving strangely on my server.
Regards
seisense