Creating a spreadsheet-style view and rotating the column causes the text to distort in Chrome + Firefox. I've managed to work around the Chrome issue using:
-webkit-backface-visibility: hidden;
However I'm left with Firefox looking like this :
Chrome (with fix)
Oddly IE 10 renders this perfectly - and Mac browsers do a better job too.
Any suggestions greatly appreciated
As of Firefox v16, Mozilla implements the unprefixed backface-visibility property, which might work for you:
IE10 will pick this up as well.
More information on the MDN backface-visibility