There is a rare issue where the icon itself becomes blank which I think is what you are seeing here.

It shouldn't cause you any harm other than a blank spot where it should be.

And that is irritating and should be fixed. Is it being looked at?

So, I guess it isn't important enough to fix?

I don't think it is causing any major issues and on most machines the icon ends up being hidden 99% of the time anyway so it is unlikely we will be putting out a patch to sort that right now.  The issue has been there since MP 1.0 and it is very rare hence the very low number of reports of it.  I am not 100% sure it isn't caused by an interaction between it and SDMCP.

If it irritates you then a quick unload and reload of Multipl.exe would sort it.

Thanks.