Hi @wizthis
I did test in my environment (Mac OS 10.14.6) and found this issue also reproduced on PowerPoint Online. It look like this issue is not related to Team's behavior. I will try our best to research this issue. If there is any news, we will update it as soon as possible.
As a workaround, you can try to use the keyboard to print math equation instead of using Math Equation in PowerPoint. For example:
x = x * y
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