WYSIWYG editor looses the Query String inside a Link when inside a Group

To reproduce:

• Create a page with

  (((
  [[label>>Main.WebHome||queryString="a=b"]]
  )))
  
  hello
  

• Edit in wysiwyg and replace "hello" by "hello2" (for example) and save
• Edit in wik mode and verify that the query string has been lost