I cannot say that the one definitive "fix" has been delivered but since the issue of the update was raised I think I've seen three (3) updates to the image for Document Server. The latest release of Document Server, for example, was two (2) days ago at the time of this post. Check here:https://hub.docker.com/r/onlyoffice/documentserver/
Community Server was updated three (3) months ago.
To answer your question, the current release seems very good and so far I have not
had the problem discussed in this thread.
I suggest you pull the latest images and spin-up your containers again.
As an aside but related to updating the server, does anyone know if Watchtower can be used safely with OnlyOffice CE?
"A process for watching your Docker containers and automatically restarting them whenever their base image is refreshed."
See here for info at Docker: https://hub.docker.com/r/centurylink/watchtower/