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Minimize-Full/Part Screen-Exit buttons are blacked out in Firefox 28&29

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dedapr
dedapr

The upper right corner of the screen now shows a black box and I can';t get to the minimize, maximize or close buttons.

The upper right corner of the screen now shows a black box and I can';t get to the minimize, maximize or close buttons.

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cor-el
cor-el
  • Top 25 Contributor
  • Moderator

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.