How is the Adobe Fonts Library updated?

I am working on a project using the Muli font from Google, and after a reinstallation I noticed that Muli-Regular was updated to version 2.001.

I looked at previous documents in the same project, and confirmed the font was Muli version 2.000.

There is not a lot of difference between the two versions, except Muli version 2.000 included ttfautohint information, whereas 2.001 does not, and as a result the documents do look very different - especially because most other fonts in the family are still using the hinted version 2.000.

After doing some research, I realized that the reason why Muli Regular and Semibold were updated is that the postscript name of the fonts changed, so the update does clarify menu classification.

However, the difference between the versions means that I must now deactivate Muli from Adobe Fonts and install it locally in order to have consistent display. In this particular case it is not a huge problem since Muli is free, but I am wondering if the same could possibly happen to a commercial font.

That being said, the version 2.001 to Muli happened in 2016, so it begs the question of why Fonts only recently started using this version (my project files do not go back that far, which means the library update happened sometime in the last year).

Where does Adobe Fonts source its fonts? The Google Fonts page for Muli still contains v.2.000, which means the updated version was sourced from Github. However, Muli 2.100 has since been released, and I find it strange that this was not the version used in the update, considering the timing.

How does Adobe Fonts decide when a new version is pushed to devices? In this case, only two in a family of fourteen were updated, which could cause some further issues besides the visual aspect I am mentioning here (e.g., if a new glyph was added to the font, it may not be available in every weight).

It seems to me that Adobe Fonts should notify users of the updates when they happen (rather than pushing them without notice), and possibly allow users to roll back to a previous version, similar to how Cloud allows us to use previous versions of Adobe products.