I was able to fix the stacking issue in the page template by replacing the following on the td style fields for all of the the toolbar buttons:
style="display:[button:WHICHEVER|block;none];text-align:center"
with:
style="[button:WHICHEVER|;display:none];text-align:center"
That way you don't get the "display:block;". That seems to work on both IE and FF here.
Hope that helps. I didn't look into the tooltip issue...
G