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preference window only half opening

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The preference window is only displaying part of the menu on my Imac 5k. I've tried changing the text size but makes no difference, any ideas. Tried uploading a Screen shot in jpeg and png but not working!

The preference window is only displaying part of the menu on my Imac 5k. I've tried changing the text size but makes no difference, any ideas. Tried uploading a Screen shot in jpeg and png but not working!

Chosen solution

Hi, Thanks for your reply, but have already tried this and the affected window just got smaller with the same problem! But further to that Firefox just updated itself to the latest version and the problem resolved itself! Not sure if this had anything to do with my Imac OS update to Sierra too? Anyway all is working fine again now thanks

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Hi, try changing the zoom level (Cmd and - key, or Cmd and + key ). More - Font size and zoom - increase the size of web pages.

If your question is resolved by this or another answer, please take a minute to let us know. Thank you!

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Chosen Solution

Hi, Thanks for your reply, but have already tried this and the affected window just got smaller with the same problem! But further to that Firefox just updated itself to the latest version and the problem resolved itself! Not sure if this had anything to do with my Imac OS update to Sierra too? Anyway all is working fine again now thanks