This just happend recently. I use some Rich Text Blocks to let my client add and edit video’s on its own. But since this weekend it looks like the Vimeo video’s are not displayed anymore on the website and in the designer. Only when I’m in editor mode and click on the RTB the video appears. If I publish the page then it’s not showing the video.
Strange thing is that we also use RTB on collection pages that consist of video’s but they do display the video’s.
Video’s that needs to appear are on the homepage third section (blow the text) and on the IP Franchiches page combined with the text.