Unsupported content message if the description has a header formatted paragraph without text

Summary

If you click on the heading button and select one of the options, but do not type any text in it, the view will display the following message in the description field when viewing the issue:

See the recording: Unsupported content.mp4

Environment

Jira Cloud

Steps to Reproduce

1. When editing the description/comments field, click on the header button and select one of the options:

2. Press enter in the keyboard to skip the line;
3. Save.

Expected Results

Jira won't try to save that content since it is empty.

Actual Results

Jira tries to save the content of that header, resulting in the Unsupported content error.

Workaround

No workaround at the moment