I selected Windows 10 for this issue but I have also noticed the issue on Xbox One. Java and Xbox One Edition are unaffected by this issue.
In bedrock edition (and bedrock edition only) you cannot climb trap doors. This is not a major issue if the door is simply at the top of a ladder, because you'll simply stand on the top of the ladder and jump to get up. If you have a ladder ABOVE the trap door, however, you'll just get stuck.