Even with a visibility option ‘hide under windows‘ I am able to show it by touching the edge of my screen. Is there a way to disable it?
It seems developers find it virtually impossible to provide countless options for countless possibilities regarding panels.
Recently they’ve removed the “Windows go above” option (or whatever that was called) which enabled a panel to remain visible when a window (partially or fully) cover it.
I have 3 panels; top, left, and right. In the end, I decided to keep all of them “Always visible”. 
Yes, but requires a third-party widget Show/hide main panel with a hotkey - #14 by luisbocanegra