When taking stuff out of a container, specifying a subset count for
an item and getting the pickup_burden prompt, answering 'q' undid the
subset split but answering 'n' did not. If the item in question was
a stack of gold, the container would end up with two stacks. That
action could be repeated as long as any of the stacks was big enough
to trigger pickup_burden confirmation so an arbitrary number of gold
stacks could be produced. (Eventually they would be too small for a
subset to cause an increase in encumbrance, or possibly all reduced
to just one gold piece, then no more stacks could be created.)
Situation occurred for all menustyles; traditional and via-menu needed
separate fixes. It didn't occur for pickup off the floor.
Report was for 3.6.6 but the bug was still present in dev version.
afbb7e2827