Yellow "pending edit" highlight not showing up

You know how when you make a non-auto-edit to something here on MB the item to be changed is highlighted with a yellow bar? Lately that hasn't been showing up. I've made myriad edits and have confirmed they've gone through by checking the editing history on each article and yet the page will always look like nothing has changed. Is this part of a new schema change or is there something wrong on my end?