Hey there Sara2105,
Thanks for reaching out to the Apple Support Communities.
To get started, since the issue doesn't occur with other wallpapers, have you had a chance to try restarting your iPhone to see if that's able to help with the issue, even if just temporary? If not, give that a try with the steps shown in this link here: Restart your iPhone - Apple Support
How to restart your iPhone X, 11, 12, 13, or later
1. Press and hold either volume button and the side button until the power-off slider appears.
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo.
While restarting may seem like a simple step, it can sometimes help with resolving some unexpected issues like this. If still having issues after restarting, or if you're already tested the issue after restarting your iPhone, are you currently updated to the most recent iOS version that was released recently?
If not, since updating can often bring the latest features, security updates, and bug fixes, we would recommend updating and test the issue again with the affected wallpaper: Update your iPhone or iPad - Apple Support
Update your iPhone or iPad wirelessly
1. Back up your device using iCloud or your computer.
2. Plug your device into power and connect to the internet with Wi-Fi.
3. Go to Settings > General, then tap Software Update.
4. If you see more than one software update option available, choose the one that you want to install.
5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do.
Keep us updated on the results, and we'll continue from there.
Have a great day!
