The problem occurs on koha 16.11 in the french interface (not in thr english one). Whatever rule you edit in the issuing rules (french interface), the current value of on shelf holds is not kept : it's systematically positionned to yes (I suppose because it's the first item of the scrolling list). So, if you don't pay attention to this, when modifying an other parameter you risk to change this reservation rule without being aware of. Olivier Crouzet
It's an issue in the translation: "Si tout est indisponible" vs "Si tous indisponibles" The correct option is selected if the text for the option is the same as the text in the cell above. Note that it's fixed on master.