Warnings in the watch mode

I have N warnings in the app. I run rescript watch - it shows all of them and editor integration shows all of them as well. Then I save some file in the editor, and all of the warnings disappear from diagnostics.

This is what I see in the console:

After each consequent save, compiler stops outputting warnings - I guess it's related to the reason they disappear from editor diagnostics?

Also, two kinda unrelated remarks:

1. Feedback time - from save to update - noticeably increased compared to v11. Is this expected or is it something with my setup?
2. Seems like if I have 3 packages in a workspace, each package has own namespace in editor integration? With Rewatch, I hoped to get workspace wide diagnostics as it's done in rust-analyzer, but apparently it's not how it works in ReScript LSP?

Start by reproducing the behavior with rescript watch, saving a file after warnings appear, and checking the editor diagnostics. The payload names no source files or tests, so trace the watch-mode compiler output and editor integration first. Done should preserve warnings after subsequent saves and clarify the feedback-time and multi-package workspace behavior.