*** This bug is a duplicate of bug 1856032 ***
https://bugs.launchpad.net/bugs/1856032
Although you're probably using the Ubuntu Dock, which would make it a
duplicate of bug 1856032. If that's not correct then please follow the
steps in comment #1.
** This bug has been marked a duplicate of
*** This bug is a duplicate of bug 1856032 ***
https://bugs.launchpad.net/bugs/1856032
Please:
1. Attach a screenshot of the problem so we can see which dock you mean;
and
2. Run this command to automatically gather more system info:
apport-collect 1913662
In future please try to use