Scratch

Earlier, when I was making a project, all the words came off yhe screen. The names of the sprites, costumes, stage and background and even the scripts had nothing on them. Does anyone know why? I'm sorry, but I couldn't get a screenshot of it, it wouldn't let me.

when gf clicked
repeat until <(Bug) = [fixed]>
  go to [forums v]
  post a topic
end
think [Why is the bug happening?] for (3) secs