Copy/paste only works in IE

[danielaproell]

Since some weeks we are facing the issue, that the copy/paste does only work in IE in our company. It does not work in Chrome, Edge, or Firefox. We also tried to use various snipping tools, but this does not make any difference.
We are using Clipboard image paste version 1.13 and redmine version 3.4.4

First we thought about an infrastructure problem or some browser settings (limitations) from our end, but the strange thing is that, we work together with a partner company who use redmine and clipboard image paste as well. We do not have any issues in any browser if we use copy/paste with f.e. chrome in their redmine.

Does anyone has an idea what the issue could be?

Greets