It would be nice if Zabbix Frontend would feature support for HTTP 2.0. Currently it does not and, in order for every option to work in the GUI, HTTP 2.0 need to be disabled in reverse proxy options.

This causes another issue. For example for nginx, due to construction of processes, one cannot simply disable HTTP 2.0 for one virtual host only. See https://stackoverflow.com/questions/40987592/can-i-enable-http-2-for-specific-virtual-hosts-only-on-nginx for details.

Had Zabbix supported HTTP 2.0, everyone's life would be easier, I guess.