Switching Between Vertical and Horizontal Make Objects Unreachable

[TheJoeSmo]

Describe the bug When switching the level between horizontal and vertical the level editor makes it impossible to move objects that were cut off due to the switch from horizontal to vertical or vise versa.

To Reproduce Steps to reproduce the behavior:

1. Open 1-1 or 7-1
2. Open the Level > Edit Header
3. Click on Level is Vertical
4. See error

Expected behavior The objects should be movable or be relocated appropriately.

Screenshots