Description of problem:
Synced Content field becomes blank for a inherited Hostgroup after a couple of submits on the hostgroup on Red Hat Satellite 6

Version-Release number of selected component (if applicable):
Satellite 6.14

How reproducible:
Always

Steps to Reproduce:
1. Create a nested hostgroup. It inherits the "synced content" from the parent HG.
2. Edit the inherited hostgroup again and check the "synced content" tab, it now has changed to Inherit Parent [id of the content]
3. Edit the inherited hostgroup again and check the "synced content" tab, it now has changed to Inherit Parent[no value] which is blank

Expected results:
The "synced content" tab should show the correct value.

Additional info:
1. Edit the original hostgroup and the "synced content" tab becomes blank BUT hammer hostgroup info shows the values in output.

2. This works fine in 6.12.