I think you may be suffering from the fact that your status bar is already disproportionately large (even with the standard theme) because of your other add-on icons in there, which makes the icon and text become multi-line. I don't really have a ready solution for that.
Is there any wat to have it look like firefoxs default?
Firefox's default is to not show this indicator at all
, so if you want that, you can right-click the status bar, choose customize, and remove the download indicator panel.