[V5.1 - Ground Combat] downed sebillian still counted as active

[wulf 21]

The sebillian in the screenshot dropped to gound but was still counted as active by the game (as seen by the alien head icon + the fact that mouseover brings up the crosshair. I did not press Ctrl while doing this screenshot).

The following I did before it got into this state:

• there exploded a flashbang near it, but it did not supress it
• there exploded smoke grenades near it
• there was done a lot of small damage portions to it, like 1 sniper shot, 1 smg shot and a lot of pistol shots
• it took more than 1 turn (so it regenerated at least one time during the whole process

In this state the sebillian actually did not longer move during alien turn but it was impossible to kill it because all shots would miss, even if the game displays a high hit chance. The only thing it still did was that it regenerated on finish of the turn after downing it (+33 HP, if I remeber correctly).

I made a savegame while in this state: all_down.zip, however, after loading it the sebillian was standing again and the game allowed to finish it, so whatever inconsistency the game logic produced here is not persisted in the savegame.

The debrief screen showed I captured 3 sebillians alive, so I suspect I inadvertently stunned some of the sebillians including this one (I guess some or all of these attacks deal a little bit stun damage). Maybe this is some corner case where something with permanent + regenerable stun damage happens that makes the alien drop to ground but not registering that it is unconscious. (similar to what could happen with the HP damage in some earlier version).