Yoga does not consider Styles when computing Width/Height of a XAML control

[asklar]

See asklar/react-native-xaml#96

The default width for <AppBarButton> is coming from a Style. However, Yoga will just ask the control for its width who just gives back the "actual size", for example, 17px. However, AppBarButton has a default Style with a width of 68px.

In a C# UWP XAML app:

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In a RNW app:

[chrisglein]

The XAML Style is being clobbered by Yoga. This is part of a larger class of issues with the way the two layout systems are overlapping. See linked areas by label Area: Layout.

[chiaramooney]

Not something we plan to address on the Paper renderer as we move towards Fabric.
Fabric will not use XAML for the fundamentals of accessibility here, so this isn't applicable.