Just restarted the server, no change unfortunately. I also increased the debug level, which confirms google auth is complete, but osticket cannot handle looks like:
[Thu Mar 16 17:22:50.225171 2023] [authz_core:debug] [pid 19636] mod_authz_core.c(815): [client 149.200.76.98:62674] AH01626: authorization result of Require all granted: granted, referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.225204 2023] [authz_core:debug] [pid 19636] mod_authz_core.c(815): [client 149.200.76.98:62674] AH01626: authorization result of <RequireAny>: granted, referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.403643 2023] [ssl:debug] [pid 19636] ssl_engine_kernel.c(415): [client 149.200.76.98:62674] AH02034: Subsequent (No.2) HTTPS request received for child 7 (server demo.hazimano.hu:443), referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.403722 2023] [authz_core:debug] [pid 19636] mod_authz_core.c(815): [client 149.200.76.98:62674] AH01626: authorization result of Require all granted: granted, referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.403729 2023] [authz_core:debug] [pid 19636] mod_authz_core.c(815): [client 149.200.76.98:62674] AH01626: authorization result of <RequireAny>: granted, referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.403805 2023] [authz_core:debug] [pid 19636] mod_authz_core.c(815): [client 149.200.76.98:62674] AH01626: authorization result of Require all granted: granted, referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.403825 2023] [authz_core:debug] [pid 19636] mod_authz_core.c(815): [client 149.200.76.98:62674] AH01626: authorization result of <RequireAny>: granted, referer: https://accounts.google.hu/
[Thu Mar 16 17:22:50.432662 2023] [deflate:debug] [pid 19636] mod_deflate.c(869): [client 149.200.76.98:62674] AH01384: Zlib: Compressed 4991 to 1615 : URL /index.php, referer: https://accounts.google.hu/