Purchase Invoice quick Entry Form

I checked for “Quick Entry”.

As well as I check “Allow in Quick Entry” for All mandatory fields in 'Purchase Invoice".

But instead of opening popup box for Quick Entry, Full Form is opening.

ERPNext: v15.6.1 (version-15)
Frappe Framework: v15.5.0 (version-15)

Is anything I am missing?

Is there any restrictions for Quick Entry Form for some Doctype?

Dear @umarless , If you select any field in supplier child doctype, then instead of quick entry the full form will open. Kindly uncheck all quick entry and check.

I am really sorry I didn’t understand.