>>>>>MacOS Catalina 10.15.4, AutoCAD 2020 version Q.46.M.184.
You need to try to install latest update from here:
https://knowledge.autodesk.com/support/autocad-for-mac/downloads/caas/downloads/content/autocad-for-...
This Update fixes compatibility issues with macOS 10.15 Catalina.
And then install AutoCAD for Mac 2020.1.2 Hotfix from here:
https://knowledge.autodesk.com/support/autocad-for-mac/downloads/caas/downloads/content/autocad-for-...

After you will install updates, test your problem again.

>>>> I am using a student license so I'm not sure if there is any issue there.
There shouldn't be any issues with student license, as AutoCAD is the same for students and for commercial users.