Hi Linus,
I tried to replicate the issue you reported. In my case, the GridAlpha value remained constant during the transition from R2023a to R2023b.
When you observe changes like the ones you've described it's typically not due to a bug. Instead, this behavior can be attributed to MATLAB's efforts to maintain compatibility and incorporate improvements across its versions.
If you believe an automatic adjustment is adversely affecting your app's functionality or if you suspect it might be a bug, consider providing feedback to MathWorks. They can offer specific guidance particularly in situations where sharing your files publicly may not be preferable.
You can contact the support from this link. https://www.mathworks.com/support/contact_us.html?s_tid=bug2create
Best regards.
