Weird MIDI issue with DT and DN sequencing ableton

Having an issue with using my DT and DN to sequence either vst’s or external synths through Ableton.

Everything works fine until I press stop in Ableton. When restarting, all sequencers start and everyone is playing/synced but looks like the channels aren’t receiving the midi sequences from the DT and DN

If I stop and start again a few times, same thing, nothing.

However, if I toggle any of the Track/Sync options on or off in preferences, its back to normal. It doesn’t matter which ones I toggle either.

Anyone come across this before?