Stackable Heading block is not showing up on Document Overview > Outline tab

[andeng1106]

Describe the bug Stackable Heading blocks is not showing up on Document Overview > Outline tab.

Fix for this might be helpful for native Heading block's incorrect heading level for H3-H6 headings when there's a Stackable Heading block present. Related to: https://www.facebook.com/groups/wpstackable/posts/1256702418551602/

To Reproduce Steps to reproduce the behavior:

1. Add new page
2. Add a Stackable Heading block
3. Go to Document Overview > Outline tab
4. See that the Heading block added is not showing up
5. Try adding a Native Heading block
6. See that the Heading block is showing up as expected

Expected behavior Stackable Heading block should show up on Outline

Screenshots

https://github.com/gambitph/Stackable/assets/103395655/d38440b8-5810-4c1c-947d-1b74f8789e0f

If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. MacOS, Windows, iOS, Android, Palm OS]
• Browser: [e.g. Chrome, Firefox, Edge, Safari, IE 11, IE 7]
• Browser Version: [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhoneX]
• OS: [e.g. iOS 12.0]
• Browser: [e.g. stock browser, Safari, Chrome]
• Browser Version: [e.g. 22]

[andeng1106]

As per Jami / Confirmed by Community Specialist & QA (02/12/24):

The outline doesn’t support third party blocks. It’s something WordPress would need to support