Description of problem:
Add some environment disks, network interfaces and disks to a running VM, then click the item link in the Pending Changes above, it gets a blank page below.

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

How reproducible:

Steps to Reproduce:
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Actual results:

Expected results:
It leads to the tab which contains the data, eg: for environment item, it leads to disk tab which contains the disk.

Additional info: