Tiptap issue 445

Setup

• clone
• make sure you have .env (copy .env.example) and generate key
• composer install
• php artisan migrate (uses sqlite)
• php artisan serve

Steps to reproduce

• Go to: http://127.0.0.1:8000/admin/ (port might be different)
• In posts create a new plain_text entry: 123 (leave rich_text blank)
• In post create a new plain_text that contains any string character such as '123a' (leave rich_text blank)
• See: app/Filament/Resources/PostResource/Pages/EditPost.php for code. Uncomment each individual part between /* ... */ one at a time and comment out the ones before.