Comment 4 for bug 591435

It has been more than five years since this issue has been reported. The presence of this non-working button continues to cause user frustration, occasionally manifested as additional bug reports and/or requests for technical support.

I would ask that the developers consider simply hiding (or removing) the button until such a time that a mechanism for halting extensions can be determined and implemented.

The text that is presently displayed above the button ("EXTENSION_NAME" working, please wait...) is clear enough. Simply removing the button is a simple solution that will likely save user confusion and frustration.