Return to Rise lesson/course after closing content link tab

I've built a multi-lesson course in Rise with links to videos, PDFs, etc embedded in the content blocks. The Rise course itself opens from our LMS in a separate browser window (but not a browser tab). When a learner clicks a content link in the Rise course, it opens in a new tab. When the learner finishes and closes the tab, the Rise course seems to have disappeared. It's still an open browser window in the browser, but it isn't visible right there. If they don't know to look in their browser icon, they will think they're lost and have to open the Rise course again from the LMS. They end up with dozens of Rise course windows that they can't see after they close content tabs. Shouldn't they always be returned to the window with the Rise course? There has to be a solution for this.