It's not just the defence that is the issue when we concede, it's what the entire team is doing when we don't have possession.
When we stick to plan, we generally do the right things to get back into shape quickly , compress space and shut them down.
When we don't stick to the plan, we sometimes lose the plot and panic, leaving big gaps all over the place.
While that has happened in spells this season, for some reason against Falkirk we spent the entire 2nd half playing that way. All the more surprising after the first half performance.