Bug can be seen in:
I too have this problem on Firefox 21 (Windows 8 Pro).
Got an answer (from Samuel I’m assuming) on the @NewsBlurSupport Twitter account. Simply resize the feed list and all should be good.
Thanks for letting me know, I had no idea it was re-sizable…
I’ll have to remember next time that this website obviously must not be followed that often compared with their twitter account…
No, I didn’t either. Was a little embarrassed as it was such a simple fix.