Rated 5 out of 5 stars
Version 2.6 has bugs . Pls revert to version 2.5
After Auto-Update from 2.5 to 2.6 , Addons TabContextMenu option ie " Close Tab to Left / Right " was lost ,
Opening Menu Editor Addon Option and Re-Applying Tab Context Menu Option brought it back
Thought "problem solved" , but NO ,
glitches with menu editor addon made this addon context menu fail to work - manytimes ..
Thanks again for your report. I took the time to analyze the described problem but was unable to reproduce it. Close other tabs has no functionality (not a single line of code) to hide its context menu items.
I assume that there is some incompatibility with other add-ons that you have installed. I'm sorry - there is nothing I can do to help you. My procedure to add context menu options is the official one from the documentation that can be found in the Mozilla Developer Network. You might want to try the following: install Close other tabs in a new Firefox profile, then add your other add-ons until the problem reappears. This might help you to identify which add-on is incompatible with Close other tabs.