Why is border-radius property giving me different result after switching it off and on again?

I am using primeng's radio button and white circle inside has a border radius of 50%.

However, at first, it is "glitchy" and not 50% (it has a kind of sharp edge at the right bottom corner).

Before switching the border-radius property in Developer Tools:

After I switch the border-radius property off and back on, it fixes itself for some reason: