How to make tampermonkey work on a tab with no address?

Question

JavaScript

When you open a tab with one of the extensions, there is nothing in the address bar, respectively, the filter // @match *://* and others do not want to work.
Specifically, in my case - the metamask extension - it opens in a separate browser window. I don't understand how to make tampermonkey work with this tab.

Answer 1

No, you can only change the extension code.

Answer 2

You can try to remove the restrictions in extensions.webextensions.* in about:config, but I'm not sure, most likely this option is stupidly not provided for in the monkey and you need to make changes to the extension, but this is not so easy. as an option - try to open this window in a frame, you can get access to it in this way.