Steps to reproduce:
I installed Keeper Password Manager from the Google Chrome Web Store, and upon clicking the icon a blank box appears and nothing else occurs. Installing the same add-on from the Firefox Add-Ons store leads to the same thing. I disable all other addons and restarted the browser several times, and nothing changed.
I expected a small box to appear with a login screen for my Keeper Password vault in order to use on any website I was logging into.
Orion Version 0.99.113.2-beta (WebKit 613.1.12), MacOS 12.3; MacBook Pro 16" with Apple M1 Pro:
Vs. what normally occurs on the Brave or Safari browser.