Created attachment 8724626 [details] скрин.png User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0 Build ID: 20160210153822 Steps to reproduce: I have installed the specific extension several times. Actual results: It wasn't showing the extension had been installed at "addons.mozilla.org/firefox". I was able download and install extension multiple times. Even though in "extensions" tab in my browser it only show up once. Expected results: User should see this extension have already been installed and should not be able to download and install it again. It can be replaced with "Delete extension" function or simply greyed out.
Component: Extension Compatibility → Add-ons Manager
Product: Firefox → Toolkit
For security and privacy reasons websites like AMO cannot tell what add-ons you have installed. This is working as intended.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → INVALID
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