(1) Bob starts conference on meet.jit.si. Opens whiteboard and does some doodling. Hides whiteboard.
(2) Mary joins conference and is immediately shown whiteboard that Bob previously hid. Is this a feature? Mary hides whiteboard.
(3) Both Bob and Mary opens whiteboard and does some doodling. They both hide whiteboard.
(4) Jane joins conference and is immediately shown whiteboard that Bob and Mary previously hid. Is this a feature?
(5) Then Bob is automatically put in tile view mode. This must be a bug.
Feature. Tile view is the default with 3 participants. The whiteboard overrides that, but when hidden the default layout takes over, that is, tile view.