Checkpoint Teleport, Act 3, Temple of Kopec, Bug

1st:
after i got killed from the boss on the 3rd floor the checkpoint before the same didnt saved on any of my deaths and i was returned to the savepoint on the 1st floor

2nd:
when i was trying to use the checkpoint to teleport back to the 3rd floor i automaticly i would be trhown to the 1st checkpoint, then after i teleported to the 2nd checpoint and from there i tryed to teleport to the 3rd and i was sent again to the 1st floor

3rd:
i would sent a screenshot but was not able to upload, no working option.