Using the game's default 1-tile shelves, that allow 3 stacks.

Set Stack Gap to "x1 stack" on a shelf configured to accept the three standard types of medicine.

Expected behaviour: shelves will have 1 stack of each type of medicine (at most).

Actual behaviour: shelves get 2 stacks of glitterworld (25+21) and 1 stack of a different type (or empty).

In other words, two similar stacks despite the stockpile mode being set to "x1".

Does "multistack" have to be enable in the mod options to make it compatible with standard shelves? And, if so, will that cause (ground) stockpiles to have multistacking enabled too?