For future readers of this thread:
This is exactly why I do not use the default project library location. Mac, Windows, doesn't matter.
I have found it a best practice (for me at least), to connect a project library to a dedicated folder on my system that won't be touched by system updates, preferably on a separate internal drive that is not the boot drive.
For every fresh install of Resolve, I disconnect the default library location immediately after reconnecting to my chosen location.
Ah, and also, I manually export my library and REIMPORT that library as a test to make sure it works before any updates, as recommended.

Sent from my motorola razr 2023 using Tapatalk