[BUG] iPadOS/iOS 18 Forced TabView/Tab Bar/Tabbar

[imadofficial]

Description

Upon iPadOS 18's Dev Beta's release. They introduced a new way to navigate through various pages, "TabView". Although it can be useful, you can't really get rid of it in .NET MAUI.

So instead you'll experience weird behaviors that aren't intended like so:

It looks like the iPadOS version of the app assumes there is a tabview available but I can't really say that for sure.

Steps to Reproduce

Step 1) Create a new MAUI Project.
Step 2 [Optional]) Set the " Shell.NavBarIsVisible="False" " flag in the MainPage.
Step 3) Run it under an iPad Simulator on iPadOS 18.

If you did all of the above you'll see this TabView showing up out of nowhere with no way to get rid of it.

Link to public reproduction project repository

https://github.com/imadofficial/TabViewIssue

Version with bug

8.0.21 SR4.1

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iPadOS 18 (iOS 18 isn't affected)

Did you find any workaround?

I wasn't able to find a workaround for this.

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: 0.77

Closed similar issues:

• [iOS] Setting Shell.TabBarIsVisible="False" in navigation page causes content from other pages to display under ShellTab (#22548), similarity score: 0.77
• iOS - Shell - SetTabBarIsVisible does not resize the page to take up the space left by the tab bar (#21135), similarity score: 0.75
• [iOS] Preview 14 Shell Tabbar Renders as Blank White Screen on iOS (#5549), similarity score: 0.75
• [iOS] Appshell tabs not appearing on iOS after screen rotation (#13621), similarity score: 0.75

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[ninachen03]

I can repro this issue at iOS platform on the iPadOS 18 Simulator

[drasticactions]

This behavior could change between releases since iOS 18 is still in development.

iOS 18 also isn't bound for .NET iOS yet, so if there were settings to change this behavior for the underlying control implementation, they couldn't be changed at the platform level yet.

[imadofficial]

Any updates on this issue?

[kiranbasvaraj]

Do we have any work around for this.even I'm facing this issue in IOS 18 Ipad

[imadofficial]

Do we have any work around for this.even I'm facing this issue in IOS 18 Ipad

As far as i know, there is no fix yet..

[VladimirPlatun]

Good afternoon! After updating VIsual Studio for mac to version 17.6.14 and updating xcode to version 16, my Xamarin Forms app stopped seeing ios device simulators. Displays the following message:

Lower the 'Deployment Target' to see older simulators or check your Apple SDK path warning after update.

What are the possible solutions or how to add an old version of the Apple SDK?

[jfversluis]

Indeed no fix yet, we're currently looking into it. I think it's this. But it looks like .NET for iOS hasn't exposed the APIs for this yet, that means also no way to disable it. I was mistaken with this! Looking further...

For now, targeting against a lower iOS SDK will probably make it go away.

Edit: OK looked into this more, it seems like Apple has offered no way to revert back to the old behavior. They simply said, if you want the old behavior, build your own custom control. An iOS native equivalent of that can be found here. So the question is... How are we going about this?