Blade Stealth 13 (2019): Bottom case flaps

I have just purchased a Razer Blade Stealth 13 (2019) and I am generally very pleased with it. There is, however, one non-negligible issue related to build quality. Namely, the bottom case is not rigid enough to avoid flapping when pressed in the middle (see attached picture). To be sure, this occurs even under minor pressure: for instance, it is enough to hold the computer in one hand with the fingertips positioned in the middle of the bottom case (see picture) to generate the flapping. On the contrary, the top case is surprisingly sturdy. The contrast between top and bottom case makes it even weirder to handle.

Given that I have not yet read other comments pointing out the same problem, I am inclined to think that this issue is due to an accidental build default affecting only my unit. As a consequence, I am also inclined to think that the issue can be solved very easily by replacing the bottom case.

Have other people experienced a similar issue?