Wondering if this just started back in December? When I asked a user
with the issue, they said it happened some time after an update to MS
OneDrive for Business. Not sure if there is a real connection there or
not.
Having what sounds like the same problem in at least one of our
branches. Nobody here has reported it, but then, not everyone is on
10.13.x. FWIW, 10.13.1 will lock up the Finder the same way if we push
it hard enough (typically, this doesn't happen ...