Duplicate Cider glitch

I've discovered the green cider from showa could be stacked into 201 in one slot,
when you put one red cider at the back of them.
For example:
[green cider x 201] [green cider x 1] [green cider x1] [red cider x 1]

Usually the cider takes up 1 slot per item and does not stacks

 

They stack in 201 even without any other ciders, or any other measures.
Its a bug and if you keep them you might have items getting pushed out.

 

I see, so is it ok to stack them?

 

Well since you shouldnt be able too, I guess its not allowed since its a glitch and you would abuse it.
You also have the risk of losing items and some other bad things might happen.

 

I see, thanks for the reply