Upgrading one of our projects to 2019.3.0f1 breaks it, I think this is an issue with Assetdatabase v2. I know there were earlier issues with this that are marked as fixed in the release notes:
- Asset Pipeline: Fixed an issue where mutually recursive Assets could cause a crash.
- Unity Issue Tracker - Infinite Shader Graph compilation loop during project launch when project contains Asset's Store plugin
However, that was before 0b11 which fixed that issue, but this new one is happening on 0f1.
(Case 1202254) [2019.3] Upgrade to 2019.3 breaks this project due to infinite reimports