[iOS] Fixed the ScrollView sizing issue that occurred in version 9.0.30

[Tamilarasan-Paranthaman]

Root Cause of the Issue

• Previously, the platform content was wrapped in a ContentView by default, which helped prevent sizing issues. However, in PR Simplify iOS ScrollView #26763, the ContentView was removed, and the platform content was added directly as a subview of UIScrollView, resulting in the observed sizing problem.

Regressed PR

• Simplify iOS ScrollView #26763

Description of Change

• Reintroduced the ContentView wrapping for platform content, restoring the behavior that prevented sizing issues. This adjustment ensures that the platform content is correctly sized and resolves the problem caused by adding it directly as a subview of UIScrollView.

Issues Fixed

Fixes #27169

Tested the behaviour in the following platforms

• iOS
• Mac
• Windows
• Android

Screenshot

Before Issue Fix	After Issue Fix
BeforeFix.mov	AfterFix.mov

[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

[albyrock87]

@Tamilarasan-Paranthaman the scroll view can't be the source of the issue.
The fact that we removed that layer in the iOS scroll view probably revealed a different bug we still have to discover.

[PureWeen]

#27283 (comment)

[dartasen]

Shouldn't those kind of issues be take care of by the MAUI team ?
It's a bit annoying to beta test random changes in Service Release by discovering new bugs on basic controls

[albyrock87]

@dartasen if only this was a real bug... while IMHO it is exactly a "fix on basic controls" :)

#27169 (comment)

[rmarinho]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[rmarinho]

How do we know if want a ContentView or a GeneralWrapperView ? Woudln't the second one handle the layout better?

[albyrock87]

@dartasen if only this was a real bug... while IMHO it is exactly a "fix on basic controls" :)

#27169 (comment)

@dartasen lol, in the end this was a real regression, I'm sorry!
I was not thinking about the VerticalOptions.Start applied to the grid in combination with the infinite height constraint caused by the scroll view.

I created a simpler fix within #27298.

[PureWeen]

Closed in favor of #27298

[dartasen]

@dartasen if only this was a real bug... while IMHO it is exactly a "fix on basic controls" :)
#27169 (comment)

@dartasen lol, in the end this was a real regression, I'm sorry! I was not thinking about the VerticalOptions.Start applied to the grid in combination with the infinite height constraint caused by the scroll view.

I created a simpler fix within #27298.

Thank's for figuring out :)