I’ve identified a persistent bug in the Custom CSS and JavaScript editor boxes that makes pasting or editing code very difficult.
The Issue:
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Pasting Errors: When selecting all text and pasting new code, the editor often fails to execute or render the code correctly.
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Backspace Deletion: If you accidentally backspace too many times, the editor seems to “lose” the required first line.
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Line Alignment: The editor frequently forces the cursor/code to start on the second line. If you attempt to move the code back to the first line, the script/style breaks entirely.
Current (Frustrating) Workaround: The only way to resolve the “broken” state is to completely close the custom code menu and reopen it to force the editor to reset the line structure.
I have attached a video below demonstrating how the cursor behaves and how the code fails to apply once the line structure is disrupted.