drop down menue trouble
Drop down menus blink on & disappear & Google maps auto scroll to largest magnification. This problem happened twice before but went away on it's own. This time it's been persistent. I've removed & reinstalled Firefox but that doesn't help
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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
You can use "Disable all add-ons" on the Safe mode start window to disable all extensions.
You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
You can also try "Reset all user preferences to Firefox defaults" on the Safe mode start window.
Thanks for the reply. Unfortunately it didn't solve the problem.