Direct

Script doesn't run (expected).

torbrowser:

Script executes both in-browser (TBA) and cross-browser (from Fx or other apps to TBA).

firefox:

Does not work because the actual scheme should be fenix:, see below.

fenix:

It works cross-browser (e.g. from TBA or Chrome to Fx) but not in-browser (likely because of some side-effect of changes from 115).

chrome:

It works cross-browser (e.g. from Firefox to Chrome) but not in-browser.