Computer mounting install disks whenever I plug in minidp
I have a macbook pro 2015 running Mojave. Whenever I plug in a screen to minidp, connect to an apple tv using airplay, or change resolution scaling in system preferences (edit: doesn't always happen with changing in system preferences), the system mounts a lot of installers, causes hangups and general problems (sometimes dock disappears), and has crashed my computer at least once.
The exact same thing happens when I unplug the display or go back to standard screen scaling. This has only happened since I upgraded from Catalina.
The installers are dmg's in my download folders. Mostly free software (e.g. inkscape, GIMP, drawpile, Mischief Free). Mischief and inkscape in particular pull up a EULA agreement like the kind when you install a program, and a finder window with the program and application folder respectively. I could just delete or zip the installers, but it seems that it's a symptom of a bigger problem.
MacBook Pro 15″, macOS 10.14