In a patch some time ago the HUD indicators for control points were changed such that they should show a padlock when the point can't be captured due to not having lattice-connected territory under control. A neat addition, but it does not work as stated. Control points with padlocks can sometimes be captured, and sometimes those without it cannot.
It's a bug. Sometimes the padlock icon doesn't disappear when the point becomes capturable. Just as a reminder, if you have an active lattice link to an enemy base, you can capture the point there. If you somehow can't capture it, check and see if the previous base is being back-capped.
Agree, never worked properly, just like the symbols on the map to indicate a generator is down. Just remove the function, less for the game to calculate.
