@Albus You pay the hosting bill, change it however you like. 😆 That's what I did anyway, I went from this:
But I made them slightly happier by adding the lightbulb icon below the page width changing button. So they weren't too shocked,
Auto size of the preview windows needs some kind of intelligent restrictions...
This is already reported here https://github.com/NodeBB/NodeBB/issues/5208