Code Block Language Selector Dropdown Hidden

Issue Summary

When attempting to select a code block language from the dropdown menu, the dropdown itself appears to be hidden or extending beyond the visible area of the page. Consequently, users are unable to choose a language as the dropdown menu does not display properly upon selection. 

Steps to Reproduce

1. Insert code block macro
2. Click on the dropdown menu to select a language.
3. Observe that the dropdown menu does not appear or appears partially, making it impossible to select a language.

Expected Results

Upon clicking the language selector dropdown, a list of available languages should appear within the visible area of the page, allowing users to select the desired language for the code block.

Actual Results

The dropdown menu either does not appear at all or appears partially, making it inaccessible and preventing users from selecting a language.

Workaround

Collapse the left sidebar that shows space information, then you will be able to see the language dropdown for code block macro