Extra monitor desktop extension fails

[Guest]

After the last update from Microsoft Update I cannot extend my desktop to my
second monitor anymore. I do get the background image on the second monitor,
but I cannot move the mouse there. Has anything been changed here or will
there be a fix soon to cope with this problem?

 

[Guest]

I seems like Windows had switched my monitor identification so if I went the
other way (to the left on my left screen) I ended up on the other screen (to
the right on the right screen).