The bug is still present, but with Control key ("recruit all"). For example, if you have 10 prisoners and 4 of them is ready to be recruited, by holding Control + mouse click you get those "all" 4 prisoners, but the amount of "ready to be recruited" is reduced only by 1, not by 4. So you now have 6 prisoners and 3 are still recruitable. It goes like this:
10 prisoners, 4 recruitable --> Ctrl + click --> 6 prisoners, 3 recruitable --> Ctrl + click --> 3 prisoners, 2 recruitable... and so on
or
20 prisoners, 6 recruitable --> Ctrl + click --> 14 prisoners, 5 recruitable --> Ctrl + click --> 9 prisoners, 4 recruitable... and so on
Game version: beta e1.5.2