Description:  Even with tech researched and embarked army icon showing a caravel, some units would still get the status: Lost at Sea.  Even being in an army of other units that didn't have that status or with an escorting modern ship was no protection.  Perhaps they were upgraded units from an earlier era, but they would die if I didn't move them back to shore.  Sometimes I could get that status to drop and sometimes I couldn't--there didn't seem to be a method to the madness.

Save attached: a before (a turn advance will always kill those units). Buggy Disembark.ctr

Steps to reproduce: Cannot be random, but hard to track why those units are being singled out.

Expected behavior: All units should be safe to cross ocean after proper tech is researched, and should be able to avoid rogue waves or the ship-plague, or whatever kills them (even when the other units in the army are fine).