MaxVisibleGraphemes
This property controls the maximum number of graphemes (or units of text) that are shown on the TextBox, regardless of whether it’s showing the TextBox/PlaceholderText or TextBox/Text.
Changing the property does not change the position or size of the visible graphemes - the layout will be calculated as if all graphemes are visible.
Setting the property to -1 disables the limit and shows the entirety of the TextBox/Text.