Issue Summary

1. After migration of the project from server to cloud some of the "Message Custom Field (for edit)" custom fields default values although set to Wiki markup revert back to HTML format (or vice versa) after some time (a day or so). This is not happening to all the fields and only to certain Message Custom Field (for edit) custom fields 

1. Additionally, when you do not have any global context set up for Message Custom Field (for edit) but have the context set to multiple projects then the default context value is not visible if you try to Edit the default value 

Steps to Reproduce

1. The issue with the default value for Message Custom Field (for edit) reverting from Wiki to HTML (or vice versa) is not reproducible 
2. For 2nd issue (video attached):
   1. Create a Message Custom Field (for edit) ** and add it to a issue screen
   2. Then find your custom fields in Issues -> Custom field. Then click ellipsis -> Contexts and Default values
   3. Go to Edit Default value 
   4. Add a sample Wiki markup text 

      h2. Testcustomfieled 

1. 1. Edit the Edit Context and add more than one project and save. 
   2. Go back to Edit Default value and the textbox is empty or blank although the value is the backend

Expected Results

You should see Wiki markup 

h2. Testcustomfieled 

Actual Results

The actual default value has disappeared. 

Workaround

User should select only 1 project in context to show the default value so they can be edited and then add the projects again to apply the contexts=

Related article on this subject: Custom fields with HTML or JavaScript shows as plain text after migration