Reminderfox date select boxes too small

[Colin Law]

Is anyone else using Reminderfox in Ubuntu 11.04?  Since I upgraded to
11.04 the date select boxes in Add/Edit reminder dialog are too small
and only show one digit.
I am using Reminderfox 1.9.9.3.1 with Firefox 4.0.1

If I want to report this should I do it against Firefox?

Colin