DUST STAINS BEHIND 2019 iMac screen

A month after the warranty ended on my 27inch 2019 iMac in October 2020, dark dust stains started appearing in the lower corners BEHIND the screen, not the surface.

I have two 2012 iMacs running in the same room and they do not exhibit these stains.

Anybody else has this issue ?

Thanks

Attached Images

	DE0B11C4-AE19-4D28-944B-5BC1A6BA40EF.jpg (120.1 KB)
	B3A3F373-8BE4-4AE8-9EBC-F5222662220D.jpg (149.2 KB)
	FAC3C732-31BC-4804-ADF0-51AB67EE23A5.jpg (120.1 KB)
	E5CFAD41-C43C-4B74-8872-842C67600230.jpg (76.8 KB)

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