Sometimes, if Cross dies in battle, you will receive a message many in-game weeks later, stating that "Star Paladin Cross has returned to the Citadel." [已核实]
If you tell Cross to wait, then reopen dialogue with her later, she will act as if you hadn't told her to wait and have normal dialogue, but she will still remain in that spot indefinitely. Firing her and rehiring her can fix this, but remember that you must have good Karma to rehire her. [已核实]
An alternative way of fixing the "wait bug", is by opening up the console and typing set "62735".Waiting to 0, and then, with her selected in the console - disable, then enable. The console should then show that she's picked package follow().
If you make Cross hostile towards you (after she has been made a companion) she will not have a unique line when spoken to, but instead talk as if she is still a follower. If you tell her to switch to a new weapon, she will attack you with it upon exiting the conversation. [已核实]
If you give Star Paladin Cross items to carry for you, she will fail to move. The only way to get her to move again is to take the items back, dismiss her, and then ask her to again become your follower. This can happen when she is asked to wait; the solution is the same, but the problem will reoccur whenever she is asked to wait. [已核实]
Sometimes while entering areas such as Vault 87 Paladin Cross's hands will grow to humongous lengths, similar to that of a deathclaw, yet she can still use her weapons, waiting or entering and leaving an area seems to fix this. [已核实]
Sometimes, if you kill Dogmeat while having a companion (usually Fawkes), and hire Star Paladin Cross, through a series of actions she may cause the whole town of Megaton to randomly become hostile to you. First, you have to take her there. Bring her into your house in Megaton, and tell her to wait. If the glitch where she acts like she was never waiting but waits anyway occurs and Dogmeat's puppy isn't waiting at Vault 101 (or you don't fire Fawkes) you can still fire and re-hire her. Taking her outside, however, causes the entire town to be hostile. Be wary of this, because if you don't have a recent save prior to re-hiring her you may have to retrace a lot of ground, or simply kill all of Megaton. [已核实]
Sometimes, if the teleportation matrix in Mothership Zeta is used, Cross will die as soon as you enter the new area and the autosave is complete.[已核实]