Multiple languages in web browser cause problems in viewing tickets


I have observed a peculiar problem when using several foreign languages
using Firefox to view RT tickets.

If you go to Edit -> Preferences -> Languages -> and then Add Russian
and bring this to the top, (almost) everything looks fine in RT. Most of
the menu items are in Russian as expected.

However, if you move this language down to no. 2 spot, half of the page
still seems to display the characters in the Russian font which is not
the desired behavior.

This problem is only seen while viewing tickets inside RT, all other
pages that I have tested seem to work fine so probably this is an RT issue?

Any comments will be very helpful.