Hi Rich,
thank you for looking into this and reporting the issues from this forum to R&S. Sorry for the inconvenience with the inbox, i deleted the messages now.
Today i updated the firmware to 2.121 and checked if the bug still exists. This time i made it even more easy. I just use 1 channel and no protocol analyzer with normal trigger.
To reproduce: Connect a probe to COM-Port TX (PIN 3) and GND to PIN5 and open up putty with standard configuration for the COM-Port (9600,8,1,N). Now hold down the "A" key and press "Autoset" on the Scope. The scope shows (rtb_BUG_A.png)
Now while holding down "A" also press "G". If only "G" is triggered it shows (rtb_BUG_G.png), if it captures both it shows (rtb_BUG_AG_ok.png), but sometimes it shows (rtb_BUG_AG_bug.png) or (rtb_BUG_AG_bug2.png) showing the last and current triggered waveform.
I am a software guy, but when the scope shows me, that the signal has two potentials at the same time i don't think it is correct. Testing this will take you 5 minutes, maybe you can take the time and check it yourself.
BR
robotrovsky