Thanks, done.
Worth noting I had to adjust (on Debian) /etc/apparmor.d/abstractions/tor to contain:
/sys/kernel/mm/transparent_hugepage/hpage_pmd_size r,
To prevent the error:
apparmor="DENIED" operation="open" profile="system_tor" name="/sys/kernel/mm/transparent_hugepage/hpage_pmd_size
per [1].
And be sure to setcap the obfs4proxy binary again if running on a port<1024, as well as restart Tor after updating.
Cheers.
[1]:
https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1839505.html