HTML not working in About section

I’ve tried to add basic HTML in the About section like emboldening text, inserting paragraph breaks and an image, however when I ‘save and publish’, it’s almost as if the HTML is scrambled and nothing is applied. Could you please advise how this can be overcome? Is there a workaround?

Same thing. I put html images into the text section of “About” & they show up fine in the preview, but they don’t publish.