macOS Terminal.app can't split with Command + D I installed zsh. When I press Command + D in iTerm2, it could split normally.

But when I return to using Terminal.app, I use bash or zsh, it can't split with Command + D, it changed like the screenshot below.

Before pressing Command + D



After pressing Command + D



How can I solve this problem?
I've reported this as an issue on Apple Communities and also reported it as a bug to Apple Support. Until it is fixed, there seems to be no workaround.