IllegalStateException when using an inline editing macro inside an inline editing parameter

Reproduction steps:

• Create a new page using Wiki editor
• Insert the following content:

  {{box title="my title
  
  {{box}}Inner box{{/box}}"}}
  my content
  {{/box}}
  

• Save & view
• Edit in WYSIWYG
• Save & view

Expected result:

• A box should be displayed inside the box before the "my content" value

Obtained result:

• The page is blank at the second save