What about:config seting removes the close button from blank tabs only?
I actually need to reverse this change, but I cannot find the setting again. My home page and new tab page are about:blank using the FastDial extension, and I changed a config setting to remove the close button from blank tabs, then found that it wasn't so convenient on the new tab pages, now I cannot find the setting, searching for "newtab," "blanktab," "closebutton," "button," tab," etc.
Chosen Solution
Perhaps you have a Tabs related extension installed in Tools->Addons->Extensions ?
എല്ലാ മറുപടികളും (5)
The preference is browser.tabs.closeButtons and right-click it and select Reset to set it back to 1 which is close buttons on each tab (default).
Modified by James
That setting was actually still on 1, it hadn't been altered.
Chosen Solution
Perhaps you have a Tabs related extension installed in Tools->Addons->Extensions ?
Correct, it turns out to be the Tab Utilities extension. Thank you very much.
I should mention, it's one of Tab Utilities "hidden" features, which can only be changed in about:config. I knew it was in about:config somewhere. Thanks for setting me on the right track.