I have this problem for almost two weeks. My text are shown as extra-extra bold. I checked the main text style, main component but texts are not that bold as i see on figma. Sometime clicking on that extra bold font fixes that font back to normal but for a while only.
I suspect this problem occurred after i installed Rubik google font locally on my computer. I removed that local font and some issues with that extra bold font were resolved. But still after each restart of figma same issue still persist.
Check this video example: Figma-Text-Bug2