MongoDB 4.4.19-rc2 is out and is ready for testing. This is a release candidate containing only fixes since 4.4.18. The next stable release 4.4.19 will be a recommended upgrade for all 4.4 users.
Fixed in this release:
SERVER-68122 Investigate replicating the collection
WiredTiger config string during initial sync
SERVER-70235 Don't create range deletion documents
upon v4.2-v4.4 upgrade in case of collection uuid mismatch
apparently this RC is the final one which is live in the repo for a couple of days now.
Tonight (2023-02-24 23:17:38 UTC) I updated all my machines, so 4.4.18 went to 4.4.19 and one is a Raspberry Pi 4 running Ubuntu 20.04 64bit, where the database won’t start: