Copying text from Slack into markdown editor strips out empty lines and extra formatting (bold, italic, underline...)

Summary

Whenever I copy text from Slack to our markdown editor, it only copies the raw text and even strips out empty lines.

Steps to reproduce

Copy formatted text with empty lines from Slack to our markdown editor.

What is the current bug behavior?

Slack_formatting

What is the expected correct behavior?

Copied text from Slack stays in the same style and keeps all empty lines.