wp_get_archives() returns unresolved query string

[hogetan]

wp_get_archives() function returns unresolved query string.

such as

http://example.com/archives/test/date/2015/12?post_type=test

// called wp_get_archives('post_type=test&type=monthly')

Looks duplicate query parse filter or add_query_arg() not working.

refs #21596

[dd32]

It looks to me that this is working as expected.

The archives that the function deals with, are all post-specific.

Another example:
wp_get_archives('post_type=page&type=monthly' );
will generate links like this:

https://wordpress.site/2019/10/?post_type=page
https://wordpress.site/2019/09/?post_type=page

Those URLs will 404 unless the post_type specified has also been included into the global posts loops through a pre_get_posts filter.

It feels like the original report here had other filters in use which were adding the post_type into the URI, potentially the month_link filter or from within $wp_rewrite->get_month_permastruct().

I'm going to close this as worksforme, since it seems correct. If you're experiencing this issue, please feel free to re-open with specifics on how to reproduce on a clean environment without other filters.