But it is weird that the Wayfinder would be on a second resort one rather than the first one. Unless he just retrieved it from the smashed first one. Did it go through two fiery destructions of TIEs? Sith engineering is robust.
He didn’t have any reason to bring the wayfinder with him to Pasaana. His goal was to test Rey’s powers to their limit at that point. He probably disconnected it and stashed it somewhere. But when he went to Endor he was planning on taking Rey with him to Exegol, thus why he would bring it along in his TIE.
Honestly it’s not that big of a deal though.