Firefox text formatting issue after inserting image

[linzhi0]

Describe the bug
After inserting an image into the text editor, typing text will generate a new <p> tag instead of appending the text.

To Reproduce
Steps to reproduce the behavior:

1. Go to http://suneditor.com/sample/index.html'
2. Clear template text
3. Insert any image
4. Start typing one letter at a time with a 1 second delay in between

Expected behavior
The text should be next to each other and not down

Screenshots

example.mp4

Desktop:

• OS: [Debian Bookworm VM, Windows 11 23H2]
• Browser [Firefox ESR, Firefox]
• Version [128.3.1esr, 131.0.2]

Additional context
The video is on a Debian Bookworm virtual machine, but I also tested on a Windows machine with Firefox v131 and the same event occurs. On Chromium based browsers, everything works as intended.