In WP 5.3, the WP media was changed to improve ARIA support and Backbone was updated. Something in there caused the media window to no longer seem to exist before it was opened. This change moves the content mode filtration to the Backbone file_frame.on( "open" ) action.
In WP 5.3, the WP media was changed to improve ARIA support and Backbone was updated. Something in there caused the media window to no longer seem to exist before it was opened. This change moves the content mode filtration to the Backbone
file_frame.on( "open" )
action.