Steps to reproduce:

1. Create a LLD discovery rule with a host prototype
2. in the host prototype, set Inventory mode to Automatic
3. have the LLD do its thing to discover some hosts
4. do this as a user in the Super Admin role so nobody can say it is a rights issue

Result:

LLD discovery works except that Inventory mode on all created hosts is set to Disabled. This is independent of Inventory default mode in the user's profile.

Expected:

As defined in the template holding the LLD item, Inventory mode should have been set to Automatic on the hosts created - but is not.