Automatic migration. Original reporter: "echeslack"
MultiLineEditBox will always set the KeyEventArgs handled value to true, even if it hasn't done anything with the character. This is bad when, e.g. it has focus but is read only and claims to handle the character, or similar situations.
Attached is a very simple patch which makes it only set it to true if the character was actually inserted into the textbox. This is similar to a change made to EditBox for version 0.5. Patch is against SVN revision 1481.