As title, when one of our users tries to open any issue they get a "We Couldn't Connect To That Issue" message instead. We've done a screenshare and I can see from the URL in chrome that we are both on the same URL but I get to see the issue and they get this message. They can see previews of issues when entering a search term, but the Issues list is blank to them.
They are set up the same way as other users so I can't see why this is happening?