When you have a TextBox control with its type set to MultiLine, .NET inserts an additional encoded line break to the output. IE 9 seems to ignore this linebreak, but other brwosers show it, causing incorrect behavior.This happens when you assign text to the control, but also on the first load when no text is assigned, causing an extra linebreak to appear in the final HTML.
Visual Studio/Team Foundation Server/.NET Framework Tooling Version
Steps to reproduce
Operating System Language