It would be hard to help with something we cannot access to replicate. I say stick with what works in you work environment. I use Chrome at work. Sounds like you're in IT. Think about it... when a user reports an issue, what's the first thing you want them to do? Show the issue so that you can try to replicate. We cannot access your work environment. Maybe someone here has a similar work setup. Good Luck

Jones out.

I made a mistake in my first post. In Windows it does actually work. I tested it with a Windows VM in Virtualbox without any problems. So the problem still exists making a connection from my Linux Mint distro.

@ jonzn4SUSE I don´t think the work environment is the problem or else the connection from my VM also would not have worked. But nevertheless I will look into this. Thanks anyway.

Good idea with Sandbox, I always recommend it to windows pro users. Try downloading Firefox from Mozilla, run firefox-bin from the folder and see if you have the same issue. https://www.mozilla.org/en-US/firefox/all/#product-desktop-release

Sorry to say that the problem still exists. I have asked multiple Linux expert but they have the same issue.

I ' ve decided to use Chromium for the Citrix connection and FF for the rest.

Thnx averyone!

Mark it as resolved and get back to work. Hard to help with something we cannot see or access. Did you try with Firefox in Troubleshoot Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#search