yes it's normal . same in my ...but not always, only sometimes.. only base of the laptop is very solid, the top is weak...but for me it's not a problem

Try to remove partially the cover by using only Your nails - I see you have got long version haha 😉 [start on the top - it's very easy, BUT DO IT GENTLY]...and then put it together. Perhaps this will eliminate some stress in material. Remember, that the bottom of the cover is secured by the 2 screws [hided under the 2 black small visible labels] , so You can only take the top section apart

by the way You will see whether all the click-fits are not broken

You can send it to the service, but probably they will tell You that it's nothing, no issue... i'm not sure. You can always try 🙂