TouchEffect cancels all gesture recognizers on iOS (at least)

[mmiller-d8]

Description

If you have a TouchEffect on a control, no gesture events fire on the control with the behavior or any child events. I've only tested this on iOS so far.

I was trying to use a TouchEffect because of a bug (#23284) where changing the ZIndex when a pan event starts causes the gesture recognizer to get confused and it loses its mind. I though that I could use a touch effect to detect the touch and change the ZIndex there, but no. It keeps the gesture recognizer from firing at all.

Steps to Reproduce

1. Add a TouchEffect to a Grid.
2. Add a TapGestureRecognizer and register a handler for the Tapped event
3. Notice that the Tapped event doesn't fire
4. Remove the TouchEvent
5. Notice that the Tapped event fires

This is true for all gesture recognizers. Not just TapGestureRecognizer

Link to public reproduction project repository

No response

Version with bug

8.0.80 SR8

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

I was not able test on other platforms

Affected platform versions

iOS 17

Did you find any workaround?

Not yet. I'm probably going to have to end up getting the native touch events. If only there was some good documentation on how to do that.

Relevant log output

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

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• [regression/8.0.3] TapGestureRecognizer no longer works on Button (#19099), similarity score: 0.73
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• [regression/8.0.0] TapGestureRecognizers not working in maui embedded (#17948), similarity score: 0.73
• [regression/8.0.3] TapGestureRecognizer not working with TableView (#19348), similarity score: 0.71
• TapGestureRecognizer on Popup on iOS (CommunityToolkit.Maui) doesn't work on .NET 8.0 (#16402), similarity score: 0.70

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[mmiller-d8]

I just realized that this is the community toolkit, not Maui proper. I'll create an issue there.