Dust or heat damage in bottom corners of display

Really the only option is see if Apple replace the display again or connect and use an external display. Without touching on design and air flow, keep in mind that the displays are out sourced from a third party supplier.

jamespaulley wrote:

I'll ask Apple about replacement. I think I'm still in AppleCare warranty.

Check Your Service and Support Coverage - Apple Support

This is an ongoing design flaw with iMacs, going back many years now. There are countless reports of this online. There is clearly some problem with the iMac design that draws dust in and under the display's glass.

I'm not going to agree, disagree or bash Apple here in the forums. However I will admit to being let down by the iMac's all-in-one design some years ago and moved away to the BYOD (bring your own display) lines.

I too have heard about this problem as I've seen youtube videos on this. Apparently the design of the imac pro lends itself to dust building up between the glass screen. If the imac pro is still under Applecare warranty you can take it in and ask them to clean it out for you.