Another strange things happend while I saved and closed game to get log for glitch I described here: https://forums.obsidian.net/topic/94603-flickering-loot-window/

 

I launched the game again and load that last save file and after loading screen my party appeared in different part of the area, near another group of the enemies, just check the screen below:

 

http://oi66.tinypic.com/2db2qo9.jpg

 

So I saved the game after this fight and once again close the cilent to copy log file with this event. Here's the file: http://s000.tinyupload.com/index.php?file_id=00007165745758273903

Loading save in encounters areas is all broken at random. I get missing enemies sometimes, other times I don't appear in the same spot.

For the same area as you, the Chieftain wasn't there when I reload, but my party was at the right place. Then in the Sulking-Terror beach, I re-appear in the middle of the map instead of near the entrance. In the Delemgan/spore trails, the Dank Spore was gone on reload.

 

All this was after saving, closing and restarting the game. I haven't seen that on just reloading while playing.