WYSIWYG property missing after save and continue

Hi,
I have an announcement module which has a WYSIWYG field. On edit, it displays the WYSIWYG editor correctly.

After clicking on Save and Continue button twice, the WYSIWYG editor loses its property and is displayed as a normal textarea (as shown below). I would like to know how to fix this, thank you.

Version 7.11.15

Sugar Version 6.5.25 (Build 344)

Do you see any errors in your browser console (F12 key will open a panel and select the Console Tab to see if that has any reported Errors)