Regicide Quest Helper Issue

[DyslexicLemons]

When you are going through the forest after the step of "Talk to the Elven Tracker" in the "To the Elven Lands" section, and you have to kill the guard, the on screen highlights correctly, showing the guard to kill and where to go next, but the quest helper on the side skips back to the previous step, "talk to the Elven Tracker again", instead of the next step which is "Fill some barrels with tar, pick up some sulphur...":

I've attached the photo here showing that I have killed the guard but it's still telling me to "talk to the elven tracker again"