Copying and pasting text between code blocks does not preserve whitespace and linebreaks

Summary

Copying and pasting text between code blocks does not preserve whitespace and linebreaks on Firefox.

Environment

• Confluence Cloud
• Firefox browser.

Steps to Reproduce

• Create a code block with a piece of code.
• Copy it into another code block.

Expected Results

• The pasted code appears exactly the same as the copied (line breaks and whitespace are preserved).

Actual Results

• The pasted code is all in one line, line breaks and whitespace are removed.

Workaround

• Using Chrome browser.