Created attachment 901977 [details]
[advance search]system does not surpport search case via jira_id.

Description of problem:
as subject.

Version-Release number of selected component (if applicable):
v3.8.8-1 on devel server.

How reproducible:
100%

Steps to Reproduce:
1.There is a case with issue_id 'tcms-111'.
2.Enter advance search page.
3.Input 'tcms-111' into bug_id form to search this case, click search case btn.

Actual results:
system show warning: Errors - Case Bugs: invalid literal for int() with base 10: 'tcms-111'.

Expected results:
system can search this case via jira_id.

Additional info:
The above issue also happened in search case page which can enter by click 'Testing-search cases' link.