Launch external app - whitelisting not working

[redfox]

If I click on a link, which launches my external application, for example mailto: links, there is a popup with a checkbox, if I want to always allow open links from this particular web server.

But, if I check the box, it does not do anything. Next time I will be asked to confirm it again, with the popup showing up.

As I saw in the Preferences file, the option is saved, but the Chromium core does not react according to that value, like it does not exist at all.
There is for example a record: "protocol_handler":{"allowed_origin_protocol_pairs":{"https://server1.eu":{"mailto":true},"https://server2.cz":{"mailto":true},"https://www.server3.cz":{"mailto":true}}},

[catsxp]

To my knowledge, the new kernel does not have such settings
When calling external programs, a security prompt will pop up every time