I am experiencing two related display problems in Adobe Illustrator when GPU Preview is enabled. Both problems disappear when I switch to Preview on CPU, but CPU Preview disables Animated Zoom and makes Illustrator less pleasant to use.

Issue 1: Colors displayed in Illustrator do not match exported files

While working in Illustrator, the colors shown on the artboard look noticeably different from the colors in the exported artwork.

This occurs with both:

PNG files exported through Export As
PDF files saved from Illustrator

The exported PNG and PDF match each other. When the Illustrator artwork is copied and pasted into Photoshop, the colors in Photoshop also match the exported PNG and PDF. This indicates that the actual artwork and exports are correct, but Illustrator’s GPU Preview is displaying the colors incorrectly.

Switching from GPU Preview to Preview on CPU causes the artwork inside Illustrator to match the PNG, PDF, and Photoshop versions.

Issue 2: A white rectangle changes the appearance of transparent artwork

I have an image set to 50% opacity. When I place a white rectangle behind it, the image becomes visibly darker, even though the rectangle is the same white as the artboard.

The white rectangle has the following settings:

Blend mode: Normal
Opacity: 100%
No opacity mask
No special transparency settings

A 50% opacity image should not change appearance when a true white rectangle is placed behind it on an already white artboard.

Again, switching to Preview on CPU resolves the display problem.

Steps to reproduce

Open a CMYK Illustrator document.
Enable GPU Performance and GPU Preview.
Place artwork containing light or muted colors on the artboard.
Export the artwork as a PNG and PDF.
Compare the exported files with the artwork displayed inside Illustrator.
The colors displayed in Illustrator may differ from the exported files.
Place an image at 50% opacity on the white artboard.
Add a 100% white rectangle behind the image.
The transparent image may become darker in GPU Preview.
Switch to View → Preview on CPU.
The colors and transparency display correctly.

Expected result

GPU Preview and CPU Preview should display the same colors and transparency. The Illustrator preview should also match the exported PNG and PDF files. Adding a true white rectangle behind transparent artwork should not darken the artwork.

Actual result

GPU Preview displays inaccurate colors and incorrectly darkens transparent artwork when a white rectangle is added. CPU Preview displays the artwork correctly.

Why the current workaround is not acceptable

Preview on CPU corrects the display, but Animated Zoom is only available with GPU Performance. This forces users to choose between accurate artwork display and normal, smooth navigation.

For a professional design application, users need to be able to trust the colors and transparency shown on the artboard while retaining standard GPU features such as Animated Zoom.

System information

Illustrator version: [ADD VERSION]
macOS version: [ADD VERSION]
Mac model: [ADD MODEL]
Document color mode: CMYK
Transparency blend space: Document CMYK
GPU Performance: Enabled
Animated Zoom: Enabled
GPU Preview: Incorrect
CPU Preview: Correct