In Illustrator our Huion Tablet acts as if we are right-clicking every time the pen touches the tablet. We have been troubleshooting this issue for a while. I have found a post from 2018 - in which the user was experiencing the EXACT same problem. I am pasting that info. in here for anyone who might have a solution. It seems to be an issue within AI as it is not a problem in PS. I am a high school teacher and do not have access to support within Adobe CC - someone is designated IT - who that might be in the county is beyond me.
Here is where we started - same issue - no resolution. Any help is BEYOND appreciated.