I hadn't thought of FreeBSD, but, since it's said that parts of macos originated with FreeBSD it was a smart idea... glad it worked!

Regarding the crashes with the newest tramp I tried, I didn't look at them with precision, sorry. From the bugs you mentioned:

bug#24472, bug#37299 (menu bar) - I did see a menu bar crash, maybe the same thing(s)
bug#37557 scrolling - I didn't notice this one, but perhaps the keys I pressed that seemed to "cause" a crash were scrolling the window.

If crashing remains an issue in a little while, I can try and recreate, and will file a new bug.

Meanwhile, good luck with debugging these bug#45518 issues.

Thanks again!