Thank you for sharing your post. I understand that the new UI may alter the appearance of your buttons to comply with the Liquid Glass requirements. To assist you further, could you please provide details on the customization you have made to your buttons?
When you remove all button customizations, you will be able to observe how the new UI displays your button. Additionally, if possible, could you share the code that customizes your button?
If so, please share a link to your test project.
That'll help us better understand what's going on.
If you're not familiar with preparing a test project, take a look at
Creating a test project.
Albert Pascual
Worldwide Developer Relations.