It's not me, i did not assign any aux switch to 2 functions. This was the default setup. Here it is from system mode:
 TIP has FS1 and REC
RING has PR- and PLY
T+R has PR+ and STP

This is what i can see in H9 Control and in System mode.

I am using a TRS cable for sure. I actually have been using H9 more than a year now with AUX switch and am pretty happy using it that way.

I tried to use the looper without an AUX switch. It works great, so i decided to switch off looper functions from AUX switch buttons. So no double functions on my AUX switch. But AUX switch doesn't lists presets if the looper algorithm is ON anyway.