Black dot on desktop monitor

I've searched Tom's, MS, etal, but still confused.

This morning, after completing a session of Candy Crush Saga on my Windows 10 desktop, there was a black dot partially atop the Chrome desktop shortcut.

It is a prefect round dot about 66 percent of the size of the Chrome shortcut.

I clicked on it and then right-clicked on it to no sucess.

Computer seems fine otherwise. Yeah, I know....shameful...Candy Crush.

Unfortunately, I became addicted to it during a long nursing home stay
Kris

 

O.K.

Finally found something, somewhere, that said the black dot as on Chrome, means it was MY PERSONAL desktop shortcut to Chrome (and I could personalize it with my photo or something.....) So, my pix would be half off-set from the Chrome shortcut.

Have no idea how that happened. And, I seldom use Chrome. Usually FF.

So, deleted the shortcut and all seems well. I still have another shortcut Chrome on the desktop that has always been in the same place since...well sometime.

I have, in a fit of caution, also run MalwareBytes; MSERT and Windows Defender and all are clean.

Thanks for looking.
kris