Found a possible CPI conflict with the 'blood feed' option for prisoners...
I had three prisoners, an unwavering loyal pawn, a sangouphage, and a possible recruit. Both baseliners were set to "Bloodfeed" while the sangouphage was set to convert w/ "reduce will/enslave" and the other baseline was convert w/ "reduce resistance/recruit." my warden would just stand around, until i turned off the CPI options.
Just bringing this to your attention, if there is a conflict with how 1.5 changed up the UI.