Description of problem:
Let's take content view for example, but what follows applies to lifecycle environment, content view, content source, puppet environment, puppet capsule, puppet ca capsule or openscap capsule fields. On 6.13 if the field is unset and I pick a hostgroup for it, the content view fiel does not get immediately updated in the form with the value from the hostgroup. However if I save the host and then try to edit it again, the values are inherited properly.

Version-Release number of selected component (if applicable):
6.13, but chances are this has been around since forever

How reproducible:
Always

Steps to Reproduce:
1. Create a hostgroup which has content view set
2. Edit a host which doesn't have a content view set
3. Assign the hostgroup from 1 to it
4. Look at the content view field
5. Save the host
6. Edit it again
7. Look at the content view field

Actual results:
The field is blank in 4, but shows inherited value in 7

Expected results:
The field shows the inehrited value in both 4 and 7

Additional info:
Created as a spinoff from https://bugzilla.redhat.com/show_bug.cgi?id=2039098