EDIT: Sorry, posted in the wrong forum.
Was it not showing percentage numbers in Vanilla WoW? I can’t say for sure but it feels like I always saw percentages when leveling in the past when hovering over the experience bar. Now I only see if the status is rested or not but not the percentage, only XXXX of XXXX EP in the bar itself is shown which is hard to read as I scaled it down a lot.
Or was that an addon that calculated the percentages back in the day? And if it’s that way, which addon was it?