Wilderness Encounter

I have this Wilderness Encounter where the game ask me to attack or evade. Its always the same one where the exit thingy is missing. This encounter is where a spear is lying on the ground in the middle. There are no monsters anywhere and no exit button.

So far, I have been evading it however, it will come to a point where the game only gives me the option to continue.

I have been saving and loading whenever I see the option given to me is continue. So every time my 6 characters moves from node to node, I save one time.

I have saved and loaded a gazillion amount of times and the exit button would not come back.

I have met a random trader and this has an exit button but the next moment , this wilderness encounter happens ( same map ) the exit button aint there.

Please advise.