Why does 'Caps LOCK' functionality is reversed ?

Issue

• CAPS LOCK key starts functioning in a reverse order when keyboard is unplugged.
• If a keyboard is unplugged with caps lock on, when a keyboard is plugged back in the functionality of the shift key and the caps lock is reversed. Typing without caps lock and not pressing the shift key results in all upper case letters or symbols.
• Pressing the shift key or caps lock on results in lower case letters. Unplugging the keyboard in this state with caps lock on returns the keyboard to expected functionality when plugged back in.