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Dialog box; When attempting to highlight/copy text (on any website) a dialog box appears preventing any highlighting/copying. HUGE ANNOYANCE!

  • 3 replies
  • 1 has this problem
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  • Last reply by jscher2000

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Occasionally I will attempt to highlight/copy a ph. number or a specific line on a (any) website. Usually this will launch a dialog box with a few optional choices: copy, cut, paste, delete, select all, check spelling...ad blocker. Big annoyance, it was not always there, can anyone help in preventing this please?

All Replies (3)

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Highlight what you want. Then <Control> C.

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Can you attach a screenshot?


Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

Clear the cache and remove the cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Clear the cache":

  • Firefox/Options/Preferences -> Advanced -> Network -> Cached Web Content: "Clear Now"

"Remove the cookies" from websites that cause problems.

  • Firefox/Options/Preferences -> Privacy -> "Use custom settings for history" -> Cookies: "Show Cookies"

You can also check for issues caused by malware.

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That sounds like Firefox's context menu for editing controls, but you wouldn't expect to see it until you right-click your selected text.