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Environment: StFX's Course Content Platform, Kwe' (Moodle).
Purpose: Guide of how to fix collaborate not automatically opening a new window/tab
Issue: Online Classroom Link
Normal Event:
Accessing your Collaborate Online Classroom is usually done by simply clicking on the activity link in your Kwe' (Moodle) Course:
This normally will open a tab and the Collaborate Lobby for your course: 
Issue Event
However, at times you may see that clicking the online classroom button leads instead to a new page.
Leads instead to:
This page is unexpected and may cause confusion as to how to enter the Collaborate Lobby/Online Class.
To enter the Online Classroom, click "Open in new window" link and this should open a new tab/window with the Collaborate Lobby for your class.
Procedure to Fix the Issue
To fix the issue. With Editing On, click on "Edit" and then "Edit Settings" from the menu to the right of the Online Classroom link
Once in the "Edit Settings" page, simply go to the bottom and Save and Return to Course: 
If you still have trouble, visit their support site.