bug (resolved) with “Mount drive” web-button in colab. Accessing “shared with me” files from google colab (y2020, previous solutions seem to fail)

Question

[ Newer Edit]: colab team reported that they corrected the issue on May 27 2020. I have checked - it works Okay for me now.
Link to issue: https://github.com/googlecolab/col

Answer 1

Brief: do NOT mount google drive by web-interface button "Mount drive" (it is bugged), but do it in the "old" command line way, and you will not have problems.

Details:

After getting excellent answer above and playing with it, it seems I found some strange thing which results in simpler solution and probably indicates that there is currently a bug with mounting the google drive by the web interface button "Mount drive".

I mean do NOT mount the drive by interface:

But do it in the old way:

and that is all - you will get the access to files which added before with the help of "Add shortcut to Drive":