syncthing: too many open files?

[nia <nia%NetBSD.org@localhost>]

Has anyone ran into syncthing spamming the following in its log
when faced with a large directory (1402 files, 173 subdirectories,
~22.8 GiB)?

 Listen (BEP/tcp): Accepting connection: accept tcp [::]:22000: accept4: too many open files

It's unable to sync anything.

kern.maxfiles is 32000, ulimit -n is 3000 (the max it'll let
my user account set).