RichEditorDemo exposed a logical flaw in the RichTextFormatHandler responsible for copy/save/export code. Technically speaking, this is a product bug in the RichTextArea, though it can only be reproduced with RichEditorDemo.

To reproduce:

- open RichEditorDemo app
- type 1, tab, 2, tab, 3
- select the first line
- copy (command-C or ctrl-C)
- paste (command-V or ctrl-V)
--> nothing gets pasted because the RichEditorDemo toolbar sets the text color to null, which breaks the attribute

Also, attempt to save this file produces corrupted output.