Radio focus remains on previously focused option (Firefox)

[tokewf]

I'm submitting a ... (check one with "x")

[x] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request

Current behavior
For radio type fields, the focus remains on the previously focused option. This applies to Firefox 67.0.2 on macOS 10.14.5, but works fine in Chrome.

Expected behavior
Focus should correctly update to currently focused option.

Minimal reproduction of the problem with instructions
Open https://stackblitz.com/angular/xknldvdvpml or https://formly.dev/ui/material and scroll to "Radio type" in Firefox, and click the options.

• Angular version: 7.0.3

[aitboudad]

I couldn't reproduce it on Firefox 67.0.3 Ubuntu, I'll check on macOS later

[aitboudad]

fixed in 5.2.0