Currently MSIX deployed desktop application (eg. Winforms or WPF) are automatically updated only when app is launched by Start menu item. When user launch app by clicking on app taskbar button or on app desktop shortcut, check for update is not launched. So if new version is available and user runs app always by shortcut or by taskbar button, new version is never detected and thus never installed. This is wrong, because users strongly prefer runs app by desktop shortcut or by taskbar button. Thus I ask to implement checking for update also by clicking on desktop shortcut and on taskbar button.
More description you can find on GitHub issue