'ExtraTall' size value for Input windows not working

Regular and Tall work just fine, but when I try to use ExtraTall, it defaults to regular. Was this deprecated recently, or is there more to enabling it that I'm not seeing? Looking at the documentation, it gives ExtraTall as being a valid choice on the page dedicated to 'Input'. On the XML reference page, though, it only lists Regular (default) and Tall as being valid options.

I'm running on the latest version (2.11.1.2), 64-bit.