Can't open a new tab with the + for tabs. Can open with Mid mouse button. Nightly.
When I click The + to open a new tab in Nightly, it does nothing. I can open new tabs with mid ouse button, or right click>open in new tab. Just cant open a new tab via the + button. Started 3 updates ago in nightly (3 days ago pretty much).
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Are you using a 32 bit Nightly build or a 64 bit Nightly build?
The 64 bit Nightly build for Windows is only generated to test for compilation errors and doesn't undergo all the tests that other builds get, so the risk that something goes wrong can be quite high.
So if you do use the 64 bit version then try the 32 bit version to see if you still have this problem.
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.
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
- https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
- http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.