Been using/abusing wezterm for years, my scrollback is set to 1000000 and text selection has never been a problem... copy mode however does make it even easier
I hed to look this up, so here's a correction: it was one large line logically split, not smaller lines. So you can't select, say, a long compact JSON line.
hn92726819|3 hours ago
Still not fixed: https://github.com/wezterm/wezterm/issues/3494