Searching content with the search form requires login.

[gaojianzhuang]

Describe the bug

1. Enable the search related features and configured some setting for the search index.
2. Enable the search form in the frontend layout.
3. When the user is anonymous and input the search string then click the search button, the page will redirect the admin login page.
4. When the user is logged, the search feature will works well

Orchard Core version

OrchardCore: 2.1.3

To Reproduce

1. Enable the search related features and configured some setting for the search index.
2. Enable the search form in the frontend layout.
3. When the user is anonymous and input the search string then click the search button, the page will redirect the admin login page.
4. When the user is logged, the search feature will works well

Expected behavior

The frontend search form should not need the user login.

Logs and screenshots

The frontend search form should not need the user login.

[Piedone]

Please provide a screen recording of what exactly you do under steps 1 and 2, because it works fine for me on main: I tried the Blog recipe, ran the "Blog - Lucene Search" recipe, and searching on the frontend (e.g. https://localhost:44300/search?Terms=explore) works as an anonymous user.

[gwonen]

Note that the anonymous role needs to be given explicit permission to query any index.