Ok so I managed to solve it somehow. The issue was caused by an active Ressurection monolith in Thylysium which forced the game for actually no reason to point at TyBosso's first encounter. I did activate another Monolith, this time in Skook's Corner, near where you are supposed to kill TyBosso and indeed it showed correctly this time and forced him to spawn in that camp.
Weird issue indeed, I did played Dryads in the past and did this quest a few times but actually this is the first time I encountered something like this.
I'll let the thread here and I'll mark it with a [Solved] just if some other players encounter this issue as well.
Thanks for all of your replies and thanks as well because you took a little bit of your personal time trying to help somehow!