I'm using Gate 0.36.7 in lite mode to proxy to a modded server (curseforge) that I'm hosting, and although you can connect to the server fine Gate seems to fail to proxy that status/ping of it to show in the server list. I did a bit of investigating and it's likely that this is a result of one of the mods included in this pack that appends some additional data to the status response.

The error in Gate's log is two messages, a failed to try backend: failed to decode status response: decoder did not read all bytes of packet followed by could not resolve ping: all backends failed.

The mod in question is BetterCompatibilityChecker. If it's useful I also have a packet capture of the ping between Gate and the modded server, but GitHub doesn't seem to allow pcapng files here so if you want it LMK and I can upload it somewhere else.