I am at the ending of the main story where i am talking to Eothas. Every time i select the option that Eothas should destroy everything, he says that this is Rymyrgand's doing and then i only get the option ''end dialogue' and nothing happens.

Is this normal? Anyone else had this? Anyone found a fix?

No, it's not normal. Sounds like you have a corrupt installation or a borked save game. A fix? Who knows what the problem is?

So i did another clean playthrough and I still got the same bug.

Are you using any mods, cheats or console commands?

In a previous playthrough i used a cheat but in this playthroug nothing was used. No mods, Nothing.

Maybe a reinstall?

That would be my route.

I did a complete reinstall but the problem alas still persists. Weird.