I'm test driving the latest BC release on an Intel NUC D54250 running Ubuntu 16.04, having a Wacom Intuos pen tablet attached to it as my pointing device. So far things work generally OK. In fact, ever since I got rid of the graphical glitches through the use of the correct GL Swap Mode setting, I've been fairly impressed with BC. I currently have a little problem however: I can't seem to use the Quad Cursor. When I draw a line, preselect/select the line, wait for the Quad Cursor to appear to the right of the cross hair, and then move the cross hair towards the Quad Cursor, the latter quickly disappears to subsequently reappear next to the new position of the cross hair. In other words: it runs away from the cross hair, and cannot be caught.
I tried playing with some of the Quad Cursor's settings (e.g. Quad hide margin), but to no avail. Does anybody have a clue as to how to catch the Quad?
P.S. Incidentally, I noticed that opening the Settings window from the status bar hugely increases the BC CPU load (while this doesn't happen if I open it via the menu bar). I'm not sure if this is worth reporting as a possible bug.