Same problem on Firefox 18.0 / 18.1 / 18.2 / 19.0. Currently have NoScript message bar set to display at top of page. The following pattern occurs on 3 different computers:
If you use the NoScript button on the address toolbar, many times the dropdown menu fails to instantly close upon clicking a selection. This reaction causes Firefox to freeze the UI and not auto-reload the page.
Upon closure of the NoScript dropdown menu via clicking on any other area of the Firefox UI, reloading the page many times fails to display the NoScript message bar even if there continues to be denied permissions. The only NoScript control that remains is the main button on the address toolbar. A forced, manual reload of the page via F5 causes the NoScript message bar to reappear.
If you use the NoScript button on the address toolbar, many times the dropdown menu fails to instantly close upon clicking a selection. This reaction causes Firefox to freeze the UI and not auto-reload the page.
Upon closure of the NoScript dropdown menu via clicking on any other area of the Firefox UI, reloading the page many times fails to display the NoScript message bar even if there continues to be denied permissions. The only NoScript control that remains is the main button on the address toolbar. A forced, manual reload of the page via F5 causes the NoScript message bar to reappear.