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Check both.
The one on the left is white and cannot be seen.
The blue one on the right is visible.
On the left, I only want the background to be white, but it will still be blue when checked. How should I do this?

A checkbox has 3 colors: border, background and icon which specifies the color of the checkmark

I only want the background to be white, but it will still be blue when checked. How should I do this?

This is not possible

But, old version is OK!!

Which old version? You did not mentioned anything about a version??

Note, if you need help then please provide a DEMO project.
And describe the exact steps to reproduce the problem.

Sorry, I was wrong!
It’s normal now!!