The weirdest thing about this being that my Oyster is working barriers
just fine, despite the incomplete journey!

I have an incomplete joourney every single day when I take the mainline
from Ealing Broadway to Paddington. I have to touch in at Ealing
Broadway but cannot touch out at Paddington. It hasn't caused me any
problems - I shouldn't worry about it unless there are any pre-pay
payment implications.