Grab and Drag add-on incompatibility

[Ihaveabug]

Hello!
I've just found a bug. There is an addon called Grab and Drag https://addons.mozilla.org/ru/firefox/a ... -and-drag/, that enables Adobe Acrobat-style scrolling. It means you can hold specified mouse button and scroll the page by moving your mouse. When you are holding the mouse button, cursor changes to the icon of grabbing hand. The problem is that after I install NoScript cursor no longer changes and stays default all the time.

FF26, new profile created with profile manager, Firefox default settings, Grab and Drag 3.2.5.2 (default settings, more details below), NoScript 2.6.8.9 (default settings) . Steps to reproduce:
Launch FF, install Grab and Drag. When installation is complete, it will show Setup Wizard (screenshot available at AMO), choose "2-button mouse (use right button)", uncheck "Open the preferences dialog afterwards", press Finished. Try to scroll using RMB - you will see that the cursor changes to grabbing hand.

Install NoScript, after Firefox restarts try to scroll using RMB - you will see that the cursor no longer changes to the grabbing hand.

EDIT: https://addons.mozilla.org/ru/firefox/a ... developers - bug is present
http://noscript.net/?ver=2.6.8.9 - bug is not present

[Thrawn]

Addon incompatibilities are not uncommon, especially if addons have not been carefully written to respect others...Giorgio is pretty careful, though, so quite frankly, this is more likely to be a bug in the Grab and Drag addon. But either way, it might be possible to fix or work around it.

Does anything show up on your NoScript menu when this happens?

Is it on trusted sites, untrusted, or both?

Anything in the Browser Console (Ctrl+Shift+J)?