html - Google Font text becoming unreadable in Firefox, font-weight 300 -

html - Google Font text becoming unreadable in Firefox, font-weight 300 -

so yeah, i'm working on coding website, , i'm using font "robot condensed" ( http://www.google.com/webfonts/specimen/roboto+condensed )

now problem have jquery thing, nail button , expands total text. when nail though, of font-weight: 300 texts on page mess up, no apparent way homecoming them normal except refreshing page.

i don't believe problem lies in javascript though, because don't know of in cause this, , also, doing yesterday well, before implemented javascript (you scroll downwards page , after few seconds font mess up). i've seen issue in firefox.

normal http://prntscr.com/t009m

broken http://prntscr.com/t005u

normal http://prntscr.com/t00fl

broken http://prntscr.com/t007z

it's font becoming more lean or something. has ever experienced or might have thought what's causing it?

thanks.

edit: okay, seems happen when utilize kind of jquery on page.

html firefox text-rendering css-font-weight