Created attachment 842212 [details]
System can not load Component and category in new case page

Description of problem:
As subject.

Version-Release number of selected component (if applicable):
3.8.6 on qa server

How reproducible:
100%

Steps to Reproduce:
1.User enter 'TESTING->New case' page.
2.Check whether component and category can load value automatic or not.
3.Switch the product, check whether component and category can load value automatic or not.

Actual results:
system can not load Component and category automatic.
After click save btn, system show the carning in new case page, it can load component and category.

Expected results:
System can load Component and category automatic.
Switch the product, component and category also can load value automatic

Aditional info:
The above issue also happened in another new case page which accessed by clicking write new case btn in plan detail page.