Memory leak while using LXD on Ubuntu 18.04

If I said it was a mix of proprietary applications, some written in golang and others in nodejs, that make use of mariadb, mongodb, redis-server, and java (specifically openjdk-8), would that help? Remember, it is the same versions of these proprietary applications that are running on both platforms.

The main difference I see here is that the base operating system has changed and hence things such as memory management. I would have thought that stating what was running in the containers wasn’t terribly important but obviously not.

So, with this new information, is it now possible to get some help?