Hello Edwin,
this is just to inform you and other users about a possible issue with the new com_fields in multisites environments.

I made the update to 3.7 on the master site yesterday and went through all slave sites to "fix the database changes" (this is what I always do in Joomla updates).

However, the new com_fields core component seems not to get installed in this setting.

in order to solve this (on master and all slave sites), follow this description from GITHUB
github.com/joomla/joomla-cms/issues/15401

To fix it, go to Extensions/Manage/Discover.

Click on "discover" button, enter "fields" in search edit and select all extensions it shows, then click on "Install" button.

Hope it helps,

kind regards
Ruediger

Thank you for the feedback.
There are other issues with Joomla 3.6 and higher relative to the extension manager and some plugins that are not installed by Joomla during the upgrade.

The reason is that the joomla update has bugs and does not process the insert of records in the DB.
I suspect this is the same reason for this extension that probably need an insert into the DB that is ignored by the Joomla upgrade procedure and the Joomla / database fix.

The problem with the discover is relative to the "extension ID" that is generated automatically during the discover and will NOT match the extension ID that is defined in the core of joomla.

So this work-arround may have consequence in the future. (I don't know).

yes I see this could be an issue. Thks for reporting here too.