[iOS] Setting Shell.TabBarIsVisible="False" in navigation page causes content from other pages to display under ShellTab

[iCode5ometimes]

Description

On iOS, when setting Shell.TabBarIsVisible="False" on a ContentPage, breaks the content for other pages. It will be displayed under the ShellTabs.

Steps to Reproduce

1. Create a new MAUI app.
2. Add a TabBar for the App.
3. Add 3 pages to the app.
4. Add a button on each page to navigate from one page to another.
5. On 2nd page, to see the bug, place an element at the bottom of the page. In the example given, I placed a grid with a different colour.
6. On the last page only, set Shell.TabBarIsVisible="False" in the xaml.
7. Run the app on iOS.
8. Go from 1st page to the 2nd page.
9. Go from 2nd page to 3rd page where Shell.TabBarIsVisible="False".
10. Go back to 2nd page.

Expected result: the grid or element at the bottom of the 2nd page should be displayed properly.
Actual result: the element at the bottom of the page is displayed under the shell tabs.

Bug.mov

Link to public reproduction project repository

https://github.com/iCode5ometimes/ShellTabBug

Version with bug

8.0.7 SR2

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iOS 17.2

Did you find any workaround?

No workaround found

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!

Open similar issues:

• Top tab bar on Shell hides content (iOS only) (#19159), similarity score: 0.90
• [iOS] Shell TabBar overlaps ContentPage when calling Shell.SetTabBarIsVisible(this, true) (#10591), similarity score: 0.87
• [regression/7.0.0] Shell: Page bottom padding not calculated properly while opening a non-tabbed page from a tabbed page and coming back to the tabbed page (#17390), similarity score: 0.83
• [regression/8.0.3] Shell.NavBarIsVisible is not working on iOS (#18948), similarity score: 0.82

Closed similar issues:

• iOS - Shell - SetTabBarIsVisible does not resize the page to take up the space left by the tab bar (#21135), similarity score: 0.86

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[PureWeen]

Duplicate of #17390

Workaround here
#17390 (comment)