Description of problem:
If user begins adding a bunch of different packages via a system template's search box, it eventually (progressively?) gets more difficult to type things into the box.

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


How reproducible:


Steps to Reproduce:
1.  Sync RH content
2.  Create a new system template, "painful"
3.  painful > packages
4.  in the search box, enter "a". wait for a filtered result; select one; +Add
5.  repeat step #4, working through the alphabet.

  
Actual results:

At some point (around "f") you'll have a hard time entering characters in the field. The'll get auto-backspaced and you'll see the +Add button flickering.

Expected results:
Functional field.

Additional info:
I can't come up with a pure heuristic, but using it enough times, as outlined above, ought to make it occur.