I am using global variables for my drawing. When I change the diameter of the arc for example, one or two of my wraps don't update correctly. I eventually found out that I have to open the sketch, click on the measurement for editing, and then it changes to the correct one. You can see it happen.
It's not a massive issue, but it's odd how it only happens for one or two of my wraps, and not all of them. Could it be a metadata thing i.e. the stored background history of my drawing that could have some sort of an error? Can you actually check the background history?