I don't own FL Studio so I can not try to replicate this but I just tried under Live 10 and the Swing & Gate knob respond perfectly well when triggering another synth instrument.
Those routing settings are sometimes quite tricky depending of your DAW settings, I suggest you to have a look on Image Line FL Studio side of things, maybe there's a known issue on forums or some way to find hints about that.
I'm sure you know your way around FL Studio but it's always good to check twice
Maybe this could be a good starting point :
It's always hard to tell which one is faulty when trying to troubleshoot such issues, the plugin or the DAW.
In case you're 100% sure that this is a problem with ANA 2, a video showing you're set up within FL Studio & showing this issue could be handy. I could then try to install FL Studio 20 Demo to try to replicate and troubleshoot further.
Which version of FL Studio and which Operating System are you using BTW ?