No sir, I don’t like it.
I primary use this to demonstrate usage and prompting, in a way that all can understand without needing to relearn the visuals of someone else’s chatbot.
The auto-collapsing of the sidebar and system message at different browser widths was already annoying, requiring one to resize just right. No handles on those panes to resize them – they just disappear.
Now there’s huge amounts of wasted space, just made more dramatic.
Five minutes of CSS tweaking - still leaving these new scrollbars (which I guess are at least predictable…):