HyperPixel 4.0 Square backlight seems dim on the edges

I received today the HiperPixel 4.0 Square and set it up with a Raspberry Pi 4. After installing the drivers and making it work I noticed that the backlight seems to be really dim towards the edges, something that I have not seen in other videos and pictures of the screen. Could this one be defective?

Somethings not right? Is the glass bezel lifting off (separating) at the bottom?

I am having a similar issue with the backlight, but it is also flickering. Any solution to this, or is it a defective panel?

Just installed a new Hyperpixel 4.0 Panel on a fresh install of
OS: Raspbian GNU/Linux 11 (bullseye) armv6l
Host: Raspberry Pi Zero W Rev 1.1
Kernel: 6.1.21+
Using the drivers that came with bullseye

What are you using for a power supply?