Opens duplicate client certificate selection dialog in IE mode

When I opened a site that requires a client certificate and selected the client certificate selection dialog in IE mode, but the client certificate selection dialog of Chromium is displayed.

This seems to be happening because Chromium tries to access favicon.ico.

Therefore, to reproduce this behavior, the root of the site must request a client certificate.

In a similar situation, with Basic authentication, Chromium also tries to access favicon.ico, but it seems to fail with 401 Forbidden without displaying the authentication dialog.

Is it possible to restrict access to the favicon.ico or prevent the duplicate certificate selection dialog?

I tried to block by putting the URL of favicon.ico in URLBlockList of Edge, but it didn't work.