Issue 99073

Example - in a Writer doc, reduce the window size so that the font/backgrou
colour buttons on the button bar are in the 'follow-on' list, i.e. the dropdown
list of buttons that have gone off the right edge of the button bar.
There is now no way to access the colour pickers. You can click on the items in
the dropdown to pick the current colour again, but there's no equivalent to
clicking on the little triangle to get the whole colour chart.

Obviously, a way around this is to rearrange the button bar so that items like
this are way over on the left, but it would be better if there were some way to
access the full functionality of the button wherever it is available, including
in that dropdown list. That's particularly important for colour selection, which
is a fairly primary function.