Hi Akshay, the answer is yes and no... The problem has, as I said, gone away and I have just checked that behaviour is still as expected. But I do not know what the cause was.

I still have Skype and Chrome running, but not that "Skype Click-to-Call browser" that macropod mentioned. Maybe I had not only to de-install it but also re-boot which perhaps I did not do immediately. (My PC runs overnight to record wildlife.)

But I see that you system is much newer than mine, so it would be remarkable if your problem had the same cause as mine...

Good luck, Mike.