Removing default text in code block deletes code block

When updating a Code Block Macro into a page from a saved template, If you attempt to save or update the text in the macro it deletes the macro.

EXE:

1. go to: https://extranet.atlassian.com/display/SPRTHUB/_Creating+A+Knowledge+Base+Article
2. Pick A KB space to create
3. The Code block at the top of the template has the text "FILL IN LOG"
4. Either:

• Highlight and Delete the text
• Highlight and Paste in new text

Expected Behavior:

Text removed from macro and on paste new text is added to code block Macro

Actual Behavior:

Code Block is deleted, and when pasteing