I am having an issue with the workspace/interface. I recently upgraded to v19.1.6 last week, and I have been experiencing that whenever I open a file to work on the workspace window will automatically resize from a full screen to a smaller size. It is becoming very frustrating because there are, seemingly, no options to stop or prevent this from happening every time I open a file. It whether or not if there are other tabs open.
(I am working on a Dual Screen setup, iMac Pro 2017 OS v10.13.6, and PS CC 2018 v19.1.6)