wp.media.frame remains active on the second instance.

[llemurya]

I added in theme add_theme_support( 'post-thumbnails', array( 'post' ) ); in order to can set Featured Image.When I click on the Add Media button in the wp.media.frame is set the current frame, when I print in the console wp.media.frame.el.id,the result is "__wp-uploader-id-0".In the next step I click on the Featured Image button and in the wp.media.frame is set another instance of the frame, in the console the wp.media.frame.el.id gets "__wp-uploader-id-3", but when I click again on the Add Media button in the wp.media.frame remains the last frame and in the console is printed "__wp-uploader-id-3" instead of "__wp-uploader-id-0".

[wonderboymusic]

In 34254:

Media JS: ensure that wp.media.frame (a static reference to the "current" Frame) is reset when a cached frame is opened.

Fixes #33458.