I was fighting some beetles and decided to try out the 2nd level Druid spell Conjure Lesser Blight.  After the battle ended the Lesser Flame Spirit did not expire or die.  I traveled back to the town and it was still with me.  I went hostile in the inn and killed everyone and the spirit was still alive.  I force-attacked the spirit with my party and it blew up.  When I exited the inn the spirit was back in my party.  It was impossible to remove, dismiss, or kill the spirit.

I've also seen this, but my rain blight refuses to move anywhere so I'm now stuck in a dungeon and can't get out.

I've also seen this, but my rain blight refuses to move anywhere so I'm now stuck in a dungeon and can't get out.

Try saving and reloading. It won't get rid of the blight but it might let you move it again.

 

I've also seen this, but my rain blight refuses to move anywhere so I'm now stuck in a dungeon and can't get out.

Try saving and reloading. It won't get rid of the blight but it might let you move it again.

 

 

Just tried and reloading a save game does indeed get the blight moving again, thanks!