[Wasm] VisibleBoundsPadding does not work properly

[jeromelaban]

Current behavior

When the VisibleBoundsPadding is set on a root element, and that the Window size greatly changes, the resulting padding is incorrect, generally too large.

Expected behavior

The applied padding is of correct values.

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

• Set the visible similar to this commit:
  https://github.com/nventive/calculator/blob/3cd4ca38e0d2fa51ac4d580f7258c8ff005236e6/src/Calculator.Shared/Views/MainPage.xaml#L66
• Set the browser as a fairly small window (under windows)
• Put the browser window maximized
• Load the calculator
• Make the browser window not maximized

Environment

Nuget Package: 1.44

Package Version(s):

Affected platform(s):

• iOS
• Android
• WebAssembly
• Windows
• Build tasks

Visual Studio

• 2017 (version: )
• 2019 (version: )
• for Mac (version: )

Relevant plugins

• Resharper (version: )