Thank you for the screens. That's definitely unusual and I am unable to recreate the issue on my end, so it's tricky to figure out. The screens help though! I don't know what the exact problem is (especially since it works on your iPhone 5s, which I assume is set up the same way), but I
do think I have a solution which might fix it anyway. Therefore I think you will still have the same problem with version 1.3 once you receive the update, but I think you will be able to use the
new arrows I've included. However, as soon as version 1.3 gets approved for the App Store (hopefully sometime this week), I will submit another update, version 1.3.1 as an expedited bug fix, and see if that fixes the old arrows for you.
I sent you a screenshot on Twitter to show you what the new version 1.3 option looks like. I hope that will help you until I can submit the version 1.3.1 update. Unfortunately the Apple review process takes so long lately! That's why I hope they will grant me expedited review with 1.3.1... Only problem is I cannot submit it while version 1.3 is waiting for review, otherwise it goes all the way back to the end of the queue if they don't grant the expedite, which means it will take even longer.
Sorry for this inconvenience! Like I said, this is a very unusual issue, and apparently very rare since no one else has mentioned it. I think it must be some combination of your phone's settings or localization. But I am determined to make it right, and I appreciate your feedback! I will keep you informed on the progress so you can try the updated versions ASAP