When using the PDFTron viewer on the primary screen in Explorer client, my PDFTron tool bar is cut off when the panel is not large enough.  When I enlarge the width of the panel the tool bar shows the remainder of the tools, but takes up too much space on my screen.  The page navigation arrows seem to be in the same location with respect to the left side of the viewer. There is a lot of empty space that could be used for this tool bar when the viewer is smaller in width.
I would like to see a way to customize the tools shown on the tool bar, or in what order they are shown?  At the very least when the PDFTron viewer is small the tool bar should collapse to have zero "white space" and any tools not able to fir should be populated into a drop down list so it is obvious to the user that additional tools are available but not displayed.