I am currently shooting a few photographs running Build: 2023-08-08T23:14:21Z. The four marked knobs are without effect.

Just FYI, I just tried them and they work for me.
The top buttons alternate the focus star profile you showed with the last autofocus graph (i.e. HFR on y-axis, focus position on x-axis).
On the bottom, the buttons alternate the guiding drift vs time plot you showed with guiding "scatterplot target" plot.
I was using Ubuntu. Is this a Mac issue?
Hy

Hi,

just FYI, it happened to me as well, a few times, and with a Ubuntu-based distribution. I must admit it occurred only a few times and it was solved by stopping and restarting Ekos session (no need to restart Kstars itself). I have no clue about what happening.

Valentin

Hy, Val,

thanks a lot for posting! It works fine with simulators here, too. I'll try to reproduce with the original setup and report back. BTW, it's a Kubuntu 23.04 system here.

I set up my equipment 100% the same way I had it when the buttons did not work (Indi server at the scope running lx200gemini, Robofocus and ASI drivers). It works flawlessly now. During the night when it did not work, I did a restart without success. No idea what's different this time. So let's put this issue aside until it reoccurs. Thanks again for your help!