It’s still there.
I recommend asking at https://ww.wp.xz.cn/support/plugin/jetpack#new-post so the plugin’s / theme’s developers and support community can help you with this.
FWIW, I disable that “feature” in favor of the plugin “widget context”.
Checked out the forum and didn’t find much, but they did have a KB for debugging.
Turns out, that feature is supposed to always be on, but somehow got deactivated during the update process. Used the debugger to turn it back on!
I am having the same issue. Where is the debugger located and what code did you use to reactivate the feature?