It should eventually get on the registerProtocolHandler whitelist. https://developer.mozilla.org/en-US/docs/Web/API/Navigator/registerProtocolHandler/Web-based_

It should eventually get on the registerProtocolHandler whitelist. https://developer.mozilla.org/en-US/docs/Web/API/Navigator/registerProtocolHandler/Web-based_protocol_handlers https://developer.mozilla.org/en-US/docs/Web/API/Navigator/r... Would be nice if matrix, like, foresaw this difficulty, and added web+matrix: as an official uri. Which would mean it would be far easier to support.