In MAUI.Controls, the default behavior on Android if you set a Label's LineBreakMode to TailTruncation is to force the Label to a single line, even if you've set the MaxLines property to something greater than 1. This is a backward-compatibility carryover from Xamarin.Forms.
However, Android does support some truncation modes ("Ellipsize", on Android) for multiple lines, and TailTruncation (TextUtils.TruncateAt.End on Android) is one of them.
In Xamarin.Forms, adding custom support in your app for this feature requires creating a custom renderer. But with the MAUI handler architecture, you can simply make a quick modification to the mappings for Labels to support this feature. Just write a method to correct the default behavior and append it to the existing mappings for the LineBreakMode and MaxLines properties. Take a look at https://github.com/hartez/MultilineTruncate/blob/main/MultilineTruncate/MauiProgram.cs to see how it's done.
