Should setting a UIVisualEffectView's effect to nil remove its visual glass effect?

Question

Mr. Jefferson OP

Created 3w

Replies 7

Boosts 4

Participants 5

In the WWDC 2025 session "Build a UIKit app with the with the new design", at the 23:22 mark, the presenter says:

And finally, when you no longer need the glass on screen animate it out by setting the effect to nil.

The video shows a UIVisualEffectView whose effect is set to a UIGlassEffect animating away as its effect is set to nil. But when I do this in my app (or a sample app), setting effect to nil does not remove the glass appearance. Is this expected? Is the video out of date? Or is this a bug?

Boost

Answer 1

Onit OP

3w

I noticed the same thing — the animation shown in the video doesn’t happen when using:

UIView.animate { effectView.effect = nil }

I’ve filed a bug report with Apple for this, and I’d recommend you do the same so it gets more attention.

2

Answer 2

skeeJay OP

2w

I similarly still can't get this to work, as of Beta 7.

2

Answer 3

aswyer OP

1w

Does not appear to work on Beta 8 either.

3

Answer 4

Frameworks Engineer OP

Apple

2d

This certainly sounds like a bug! Have you filed a feedback about this? Please post the FB ID (ideally attach the sample app you're using) here so we can track this, and fix it appropriately.

0

Answer 5

Onit OP

1d

Thanks for confirming! I’ve filed a feedback report. My FB ID is FB19397537.

1

Answer 6

Mr. Jefferson OP

1d

I filed too, with a sample project. Mine is FB20069803.

Note that this occurs on Seed 9, but that's not an option in the "which build" dropdown in Feedback Assistant.

1

Answer 7

aswyer OP

1d

FB19413975. Appears to be reproducing on Seed 9.

0