Configuring Wildcard expression hangs in Whitelist page

Issue Summary

Configuring Wildcard expression hangs in Whitelist page.
In Confluence 7.13, Allowlist(replaced from Whitelist) page has changed and doesn't happen this issue.

This is reproducible on Data Center: yes

Steps to Reproduce

NG procedure pattern

1.Enter the wild card URL to "Expression".
2.Enable "Allow Incoming" => Type will be change to "Domain name" automatically.
3.Hit "Add"
=> You can't configure whitelist, and the page will be hang up.

Expected Results

You can configure Wildcard expression.

Actual Results

Whitelist page will be hang up.

Workaround

Use the following "OK procedure pattern". Or upgrade latest Confluence version.

OK procedure pattern

1.Enable "Allow Incoming"
2.Enter the wild card URL to "Expression". => Type will be change to "Wildcard expression" automatically.
3.Hit "Add"