Tested for some months of campaign on "01_23_1405", now unavailable.
Now I've been using "02_02_2100", seems fine for now but I've just begun with it.
Only strange thing I noticed is that explosive and melee damage seem to be on the high side of the dice. I wondered if melee damage bypassed the armor (which isn't the case) after a chryssalid insta-killed one of my tanks.
But since I'm using my mod which messes with everything, it might very well be some wonky values I entered here and there, that need to be fixed.