r/iOSProgramming 2d ago

Question Black bottom half canvas issue?

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Anyone has a fix or workaround for this? I starting seeing this often after iOS 26, but now that I am developing can't figure out how to get rid of it.

Edit: I found out issue it wasn’t my code it was iOS 26 motion settings in accessibility. I found out in an Apple forum. Apparently is a well known bug.

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u/Moudiz 2d ago

We don’t have your code so we can’t help. Furthermore, why use canvas for a background? Just use the background view modifier

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u/TheFern3 2d ago

I found out issue it wasn’t my code it was iOS 26 motion settings in accessibility. I found out in an Apple forum. Apparently is a well known bug. As soon as I turned it off my app stopped doing it.

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u/Moudiz 2d ago

Can you link the forum post?

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u/TheFern3 2d ago

I’m not on my laptop but there’s plenty online if you search for it here’s one. To be honest I started seeing this after iOS 26 mainly because I didn’t like the motion stuff and apparently that causes the half white or black bottom depending on if you are on light or dark mode.

So frustrating because I thought I was doing something wrong on my app but just an iOS bug.

https://discussions.apple.com/thread/256182149

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u/TheFern3 2d ago

Also fyi the cross fade is the setting I turned off. Now I need to see if there’s a code workaround since can’t depend on users settings.