That is not proper wiring for a NAND flip-flop.
If you add watch nodes to the top nand gates, you will see that they are both true (neither has both inputs true, so “and” is false, and nand negates that). Since 2nd row of nand gates has both inputs true, “and” is true, and nand negates it to false.
A true flip-flop built using gates is going to need wires looping back up to provide feedback on the current state. Any wires looping back will need to have a defer node added so XOD can figure out how to deal with the feedback loop.
If you just need a flip-flop, the existing node is your best bet. If you are just experimenting, start with one of the above diagrams (or do an internet search…there are LOTS of options).