I'm pleased that you're here to test my changes 🙂 Community interest has quietened a lot since the price of STEEM dropped!

I have seen scroll bars like that one before. It seems to happen when somebody inserts a lot of text into a 'code' block - there's a '.Markdown code' style which appears to be introducing 'overflow: scroll'. It appears to be set in the markdown.scss stylesheet.

I'm not sure why it would be considered necessary though.

EDIT: Although my comment above doesn't replicate the issue