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i play sudokufun.com everytime i type a number in a blue or clear box with the same number appears covering the puzzle witch is very annoying

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When playing sudoku at sudokufun.com everytime I type in a number a clear or blue box appears over the puzzle which is really disturbing when trying todo this game. How do I turn this shadowing off?

When playing sudoku at sudokufun.com everytime I type in a number a clear or blue box appears over the puzzle which is really disturbing when trying todo this game. How do I turn this shadowing off?

All Replies (1)

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