Hi
Welcome to the Microsoft community.
We are unable to reproduce your problem on our Mac. Can other Command shortcuts be used normally? If so, could you please test whether the same problem occurs with other versions of Edge, to see if it is a specific version issue or a general problem. Afterwards, please use the feedback function of Edge to directly report this problem to the developers and wait for them to fix the issue.
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Best regards
Tommy Jin | Microsoft Community Support Specialist