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I looked at your picture and I don’t see a spot. Maybe I’m missing it. I do see a small spot in the very right bottom corner of the screen but that appears like a light reflection from maybe a lamp or overhead lighting. If that is the area in question it might be reflecting more light there because it’s a black background and you might not notice overhead lights reflecting on more colorful screens like your clock face. Can you try describe where on the screen you see a spot?
Thank you @Aomnak for providing me with a clearer picture and I would agree that something is definitely off. I did some digging around and found this thread here discussing the exact same issue: https://community.fitbit.com/t5/iOS-App/Hourly-activity-icon-is-completely-messed-up/td-p/4985432. Sadly that thread started in October of 2021 and it still appears to be unresolved. It seems that repeated restarts of the Charge 5 does not fix the issue either. So with that said I wouldn’t start huge troubleshooting tips to fix the problem because it’s clearly not a Charge 5 problem solely but apparently a Charge 4 issue as well. Most likely a firmware glitch in the software built into the tracker itself. Like you it still functions correctly but clearly not visibly correct. At this point I can’t offer you any tips or solutions to help with your issue as I don’t work for Fitbit nor am I a programmer with any knowledge as to why this is happening. I do hope that although this wasn’t the fix you were looking for but I was at least able to answer your question and ease your fears that nothing is personally happening to your Charge 5. Fitbit Moderators do visit these threads and hopefully take note of this and it can possibly be addressed in a future Charge 5 update. 😃 I hope my response answered your question and assisted you in some way.
