Best I can tell, any element (native bricks or third party like NextBricks/Bricksable) that uses a Custom URL for the image in any part of the element has some weird behavior…not sure if it’s a bug. Whenever I use a custom URL, but then delete that image from the server I am no longer able to update the Custom URL to replace it with a new one. Where the select image box usually is in the builder I just see the “Image not found.” error message but with no way to update the Custom URL.
Adding a video, changing other settings in that section doesn’t bring back the image picker.