I'm just thinking out loud here.
The quick app switch gesture has never worked for me, either using Google or Samsungs gestures. Not sure who's fault that one is but it's definitely a bug
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Your suggestion has been communicated to the developer and the development project manager is reviewing the content. After reviewing your suggestions, we will apply them to the official version if your proposal matches our concept.
We appreciate your contribution to the beta program.
One UI Beta Team