Ah. I tested it before but now I see that I have `(setq eshell-scroll-to-bottom-on-input 'all)` in my config which always snapped point back to the prompt when I tried to edit the scrollback.

Anyway, unfortunately that is not possible in a Ghostel buffer and most likely also will never be. I'm open to ideas though how we could improve or replicate your eshell workflow.

But also, eshell is awesome and Ghostel is not a replacement for it. It's more a replacement for term.el, maybe shell.el (with line-mode) and other terminal packages like eat and vterm.