Version 30.3 Simulate Colored Paper causes white fill to render transparent and objects off the artboard dimmed
Revert to how it was before the latest update — where white filled objects appear white on screen and objects on the pasteboard look normal when using "simulate colored paper"
(this happened on macOS Tahoe 26.4.1)
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Laura, it seems like your document is viewed in CPU preview... This what makes the artwork look like it’s been multiplied with the simulated color paper’s color. And this is actually what this option is intended to do — if one prints a white rectangle on a yellow paper, it’d be yellow — as if overprinted. It’s just the GPU Preview was never designed to display overprints and calculate blend modes precisely, its original goal was to make displaying the artwork fast... alas, it’s where it mostly stopped, and it’s still not consistent with the accurate CPU Preview.
So you are using a flaw :)
I have no idea what made it toggle from GPU to CPU though.Anyway, I’d suggest using a recently introduced 'artboard color' instead. It was intended to replace this hack.
Originally requested here: https://illustrator.uservoice.com/forums/333657/suggestions/31386253
You can leave your feedback there in comments.