Caer Lem can't go back in the tower

Level 2
2 years ago

In Caer Lem, I cannot go back in the tower despite the door being visibly half open. 

Save on patch 0.4.14.b

Nothing special happened, I just can't go back in. The game says there's no path.

Party composed of:  

Sylvan elf ranger  hunter lvl 3

High elf wizard shock arcanist lvl 3

half elf paladin oat of the motherland lvl 3

snow dwarf fighter spellblade lvl 3