So after a bit of investigation this morning I submitted a Feature Request asking that attributes with periods in them (and at the end of them) be handled properly by device pages. This may not be the ONLY character that gets the duplication problem but I could replicate it with a period every time (I had never seen the "attribute does not SHOW" problem before testing though since I have never ended an attribute with a period).
I am looking to clean up the Tuya Air Sensor stuff for the 6-in-1 (the one @nrm94ee330 pointed out the changes Tuya made) today.