There was
one lonely viable half-dead and pinned German para unit (M2) within 10 hexes of a V-hex, at 4,50, only about 6 hexes away from a V-hex. (His commander has already routed off-map with heavy damage).
This condition was already answered above in post #3, point #2...
This is not too difficult to achieve with a shotgun V-hex pattern splattered onto such a "postage-stamp" sized map!.
Almost any surviving units
will more than likely be close enough so the engagement check routine at end turn sees them as threatening a V-hex and so it will blitely carry on.
If player 1 wanted to terminate the game early, he could do so by rallying this one lone survivor and moving him to the grey hexes at his base edge, so he would then retreat off-map. Or by moving him
away from
all V-hexes (I think 10 is the range).
If the unit had been involuntarily pinned in place for a while, then the Poles would have had to find him and deal with him. (And looking at the crowd heading that way, the Poles soon would have seen him!

). After all, all he need do is sweep ~10 hexes about each V-hex to find that pesky crippled unit.
No bugs, just the game behaving as it is meant to do.