When working with laptop, you cannot fit the editor and a separate material window in the same screen view. Trying to use split screen leads to 'This screen size is not supported yet' message.
This is a huge inconvenience, because it causes the user to flip between the editor and material windows, whenever using external materials to support writing the content.
This is a huge problem, when writing technical documentation, because you are always relying on API documentation, external materials on mathematical/technical concepts or real API calls & results. So one ends up constantly switching the windows, when using your solution.
As a consequence of this huge inconvenience, I would honestly prefer a normal markdown editor supporting split screen over your specialized editor not supporting the splitting.
So please, fix this issue.