There is similar bug report for this very the same issue: https://bugs.launchpad.net/ubuntu/+source/skype/+bug/1633174
Skype & skypeforlinux is affected for me, as I don't use any other affected software. I can confirm that guake (python) & keepassx (qt) & clipit (gtk) does not have the problem.
I'll add that 16.04, 14.04 have no issue like this.
There is similar bug report for this very the same issue: https:/ /bugs.launchpad .net/ubuntu/ +source/ skype/+ bug/1633174
Skype & skypeforlinux is affected for me, as I don't use any other affected software.
I can confirm that guake (python) & keepassx (qt) & clipit (gtk) does not have the problem.
I'll add that 16.04, 14.04 have no issue like this.