Hi there! My name is David. It’s a pleasure to help you today.Regarding your question, this is a known behavior in Windows 11, and currently there is no way to modify it through system settings, so your situation is not an isolated case.
I can share a method that has worked in some cases, although it’s not 100% effective.
Go to Start > Settings > Personalization > Start and disable the option "Show recently opened items in Start, Jump Lists, and File Explorer". In some situations, this prevents the icon alignment behavior from persisting.
As an additional recommendation, I suggest submitting feedback through the Windows Feedback Hub app, which you can find among the Start apps. This helps the Microsoft team identify and correct unwanted behaviors like this in Windows 11 and release future updates to improve it. Here's an article that can guide you through submitting feedback and how the app works: https://support.microsoft.com/en-us/windows/send-feedback-to-microsoft-with-the-feedback-hub-app-f59187f8-8739-22d6-ba93-f66612949332
Let me know if the shared information has been helpful. Regards.