Recently we came across a few maps that had loops without labels, effectively making the loops invisible. We only found them because they were throwing off the zoom fit calculations.
To make all loops visible going forward, loops without labels will now show up as "?" instead. Most of the time these loops are abandoned and should simply be deleted.
If you're using loops, make sure to review your maps and make any necessary corrections.
If you have a lot of these loops to delete in your map you can easily select them with the following selector: