I believe this issue was due to "legacy suspend" rather than "modern suspend" selected in UEFI. After a couple suspends I am no longer seeing the problem, but will reopen if it happens again.
** Changed in: bluez (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1823076 Title: Intel NUC (8I3BEH1) wakes up immediately after suspend if Bluetooth is still enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1823076/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs