Great extension on Chrome... I have yet to give it a thorough run thru on my new Brave browser. However, in Opera GX, there is a minor bug I came across... I had the following option turned on in the browser settings that broke the appearance of the popup from the icon (white text on white background): "Force dark pages Beta" in Opera GX's "Features" section of the main settings area. Turning this setting off fixes the appearance issue. It is a beta feature in Opera GX, but something to be aware of.