Collapse / Expand option in code block macro breaks with UI language change

Issue Summary

• Collapse / Expand option in code block macro breaks with UI language change

Steps to Reproduce

1. Create a page in legacy editor with code block macro and check : collapsible parameter
2. Publish the page
3. Expand source will be displayed
4. Go to id.atlassian.com - Account preferences - language
5. Change the language from English to Dutch ( eg)

Expected Results

• It should not affect the code block macro and it should be displayed correctly.

Actual Results

Code block macro is no longer visible.
Also, In Confluence the option to expand / collapse a Code Block gets a display:none when the UI language is changed from English to - in our case- Dutch.

Workaround

Convert the page to the new editor and use /Expand macro then inside it, use /code macro