the real unsolvable puzzle of the possibly unsolvable series

possibly unsolvable series 3 - HgcG RNA is unsolvable! (and prevotella series too)
in the upper top of the puzzle, there is a little important piece that doesnt what to shape correctly, i’ve tried everything, but nothing worked!
this is target mode:

now this is natural mode:

Seems like you went too far overboard. That structure is indeed unsolvable when using the Vienna parameters used by the eteRNA GUI.