nl_tokens: To update the featured image preview we need to manually modify the image in the core state . Though there is no direct mechanism to also invalidate its cache and re - render the preview . As a workaround we call receiveEntityRecords normally used to update the state after a fetch which has a handy invalidateCache parameter that does exactly what we need .
pl_tokens: function updateFeaturedImagePreview ( image ) { const currentImageId = select ( 'core/editor' ) . getEditedPostAttribute ( 'featured_media' ) ; if ( currentImageId !== image . id ) { return ; } preloadImage ( image . url ) . then ( ( ) => { const currentImage = select ( 'core' ) . getMedia ( currentImageId ) ; const updatedImage = { ... currentImage , media_details : { height : image . height , width : image . width , } , source_url : image . url , } ; dispatch ( 'core' ) . receiveEntityRecords ( 'root' , 'media' , [ updatedImage ] , null , <mask> ) ; } ) ; }