How to get rid of "Tap to access video call effects"

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When I enter a meeting on my cell, the message "Tap to access video call effects" pops up. It has an "x" in the top right corner, but the "x" doesn't do anything. The popup stays on my screen, even after I have left the meeting and closed Zoom on my phone. It is still there on my home screen, sitting on top of everything and I can't get rid of it. (Of course, re-starting my phone gets rid of it—but that should not be necessary.)