[18.3 HF2 Ground combat] Reaper desappears after reloading

I was playing a terror mission.

A reaper was waiting just in front of a shop on the opposite side of the street.

I reloaded the game, and the Reaper was not shown, but it was still there.

I shot the reaper; it did not die but it appeared.

I killed the reaper shortly after.

Thanks for the report.