The extension works most of the time. There a couple of cases where the Edit button which opens a popup window shows white screen, but it can be workaround by opening My Vault directly in a new tab.

What I am missing is a Copy Name, Copy Password button directly in the matching sides the same way it is available in the Microsoft Edge extension and the Chrome extension. This is quite useful in the cases where the AutoFill fails to input the fields. Currently, I have to click Edit or open My Vault in order to copy the Name or Password.