When user account got some quota, and less than 0% is used so far, the progress bar overflows.
It doesn’t affect functionality, just breaks the layout and make the browser scroll horizontally.
screenshot:
this style could just be set to 0% if the current ratio is negative, it would look OK, the number tells the user it is even negative so that’s enough to provide the figure with a 0% progress bar which is arguably valid. Better would be to style it red if negative, with the math abs of the ratio used so far.
style currently: