Quite annoyed as I bought a 3rd party screen protector for my X when it came out and worked great. Then I was having touch issues with the screen and Apple replaced the whole screen, of course that meant I needed a new screen protector so I paid them £30 to apply their one. A few months later I notice a large bubble in the corner. I plan to head in to ask them to replace it, but it wasn't a priority and now I notice that the protector also has a hairline crack, which wasn't there before. Must be from a recent knock.
I doubt they'll believe me though about the bubble being there before now that it has an actual crack, not sure if it's worth making the journey to a store to ask them nicely to replace it anyway.