Resource with Trix field always prompts for save if that field has content even if no changes have been made.

[cfc7-unikent]

• Laravel Version: 8.83.11
• Nova Version: 4.4.2
• PHP Version: 8.1.3
• Database Driver & Version:
• Operating System and Version: SQLite
• Browser type and version: Firefox Browser Developer 101.0b4
• Reproduction Repository: https://github.com/cfc7-unikent/nova4-trix-bug-demo/

Description:

When editing a resource with a Trix field. If that field contains content then the user is prompted to save changes when navigating away even when no changes have been made.

This does not occur when the Trix field is empty.

Detailed steps to reproduce the issue on a fresh Nova installation:

1. Create new Laravel project, install Nova and configure DB and user

2. Add migration to the user table to add a Text field and run the migration

   // from the migration file
   public function up()
   {
       Schema::table('users', function (Blueprint $table) {
           $table->text('description')->nullable(true);
       });
   }

3. Add a Trix field to the User resource (app/Nova/User.php) to display the newly added in Nova

   public function fields(NovaRequest $request)
   {
       return [
   // default fields are here 
           Trix::make('Description');
       ];
   }

4. Edit the User in Nova and add some content to the Trix field and save

5. Return to the edit screen for that User and then attempt to navigate away by clicking on the left hand menu

6. See the prompt to save changes even though you have made no changes.

Demo video attached

https://user-images.githubusercontent.com/31033292/167664586-d872bc5d-303c-4519-b7d0-886caffa8c0c.mp4

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