Icons for buff durations that should appear at the top of the screen, including battle/crafting/gathering/food buffs, do not appear at all. However, they are active. I just can't see their duration.

This happens on one character only, it works fine on my other characters. I only recently starting playing this character again after a prolonged break, so I can't be sure how long the issue has existed.

I cannot play the game properly when I can't see how long these buffs last. Please help.