dotnet / maui

.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
https://dot.net/maui
MIT License
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Unable to select tab after backing out of page and returning #24741

Open git103 opened 2 weeks ago

git103 commented 2 weeks ago

Description

There seems to be an issue with selecting a tab that was previously selected after leaving the page and coming back.

https://github.com/user-attachments/assets/fa286833-a3af-4ce5-a283-1d9b48bb3253

Steps to Reproduce

Initial setup for sample project:

  1. Create a new MAUI app. This is NOT a shell app.
  2. On the main page add a button that, when clicked, pushes a new tabbed page onto the navigation stack.
  3. On the tabbed page, include two (or more) pages as content.

See the included project link for a sample project. It's in the TabbedPageSelection folder in the repository.

Reproduction steps with sample project:

  1. Click the button on the main page to push the tabbed page into view. Two tabs should be displayed.
  2. Select the second tab.
  3. Press the back button to exit the tabbed page.
  4. Click the button the push a new tabbed page.
  5. Try selecting the second tab.

Expected Result: The second tab is selected.

Actual Result: The selection fails. Clicking on the second tab doesn't respond. Tabbed page remains displaying the first tab.

Link to public reproduction project repository

https://github.com/git103/MAUI_Issues

Version with bug

9.0.0-rc.1.24453.9

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

No response

Did you find any workaround?

In the OnBackButtonPressed override on the tabbed page, set the CurrentPage = Children.First(). Essentially reseting selected tab back to the default first tab before leaving the tabbed page. Setting CurrentPage to null doesn't work, it seems to have to be the first tab.

Relevant log output

No response

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