When copy and paste a squre bullet list, it will changed to circle bullet list

Description

When the user copy and paste the square bullet list to confluence page, the bullet list will change from square bullet list to circle bullet list

Step to reproduce

1. Create a Confluence page
2. add a square bullet list (press "-" and space)
3. Copy the bullet list
4. paste it on the same page.

Expected Result
the bullet list will remain square

Actual Result
the bullet list is changed to circle bullet list