[iOS 17] Fluent Button text is offset to the right

[jeromelaban]

Current behavior

Location of the code below.

iOS 16:

iOS 17:

How to reproduce it (as minimally and precisely as possible)

Uno Gallery running in iOS 17 Preview 5

Workaround

None so far

Environment

No response

NuGet package version(s)

4.9.43
5.0.0-dev.2127

Anything else we need to know?

Clicking the button makes the text appear at the appropriate location.

[jeromelaban]

Update: iOS 17 Beta 6 does not fix this issue.

[jeanplevesque]

Do you know what's special about this style that causes the issue? Like why it happens on that particular style but not on others?

[jeromelaban]

The button in the screenshot is this one:

uno/src/Uno.UI.FluentTheme.v2/Resources/Version2/PriorityDefault/Button_themeresources.xaml

Line 140 in 0bc77d0

<Style x:Key="DefaultButtonStyle" TargetType="Button">

But we do not yet have more details to provide.

[jeromelaban]

Update on this, iOS 17 Beta 8:
@ajpinedam tested on an iPhone 14 Pro, the issue does not repro
On mine, iPhone Xs the issue reproduces
On an iPhone 13 Pro, the issue does not repro
On an iPhone Xs Simulator, the issue does not repro

Continuing the investigation.

[ajpinedam]

Update:

We noticed the issue is happening when having a TextBlock as the Root Content of a Button, something like this:

  <Button Click="GetGeopositionButton_Click">
      <TextBlock Text="{Binding ButtonContent}" VerticalAlignment="Stretch" TextAlignment="Center" />
  </Button>

On Gallery, on the Sample Page we are seeing this problem, we have replaced the code above (PR # unoplatform/Uno.Gallery#941) with a simple Button:

  <Button Click="GetGeopositionButton_Click"
		Content="{Binding ButtonContent}"
		HorizontalContentAlignment="Center"
		VerticalContentAlignment="Stretch" />

Once merged we will test on the device where the problem was reported.

[MartinZikmund]

@ajpinedam is this issue fixed now?

[jeromelaban]

It's not, but we've not been able to reliably reproduce it at this time.

[ajpinedam]

@jeromelaban this issue seems to be fixed in later versions of iOS. Can we close this issue?

[jeromelaban]

Yes, let's close!