MacBook Air M1 - keyboard backlight issue

Hey,

I've recently noticed that the right command key on my MacBook Air has uneven backlight - it seems like the LEDs are brighter on one side of the key and it looks like I have a commAND button. I've had this laptop for 9 months now and I'm 100% sure it wasn't like that before. Does anyone know what may be the cause of that issue?

This picture was taken about a month ago - everything looks fine there

That's how it looks now

Even more noticeable in the dark