No indication of update available for XD

For the last updates of Adobe XD I have always had to uninstall and re-install it to get the latest version. It's not that big of a deal and it goes quite fast, but still... why is it like this:

a) Only on this laptop

b) Only for XD? 

On my PC back home it works as expected and for all other applications there is this nice little 'update' button. But not for XD. Not on this computer. 

Thanks

Ulf