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!