As observed in Firefox and Chrome the "Join" Session (German Teilnehmen) Button obtains the same parameters although it should be different meeting IDs, see also screenshot attached.

To Reproduce:

• Create a Moodle Course
• Create 2 BBB-activities in the course (or in seperate course)
• Open both BBB-activities in same browser, different tabs (you may also seperate the tabs from each other to display them in two screens as long as it remains in one browser session)
• start the conferences in both tabs
• you will end up in the same room