Can't use portion of stack using slider accurately

[spice bobcat]

I have 6 chests, but not enough room to do them all at once.
So I was trying to use the slider to open 3, and then 3 again.
Every time I try move the slider, it snaps to 2 or 4. It's impossible to get the number 3 using the slider.

Obviously theres other ways, but its a bug.
https://i.imgur.com/jdQ7CGf.png

Same things happening with my 5 gold chests. Can't select 3, always snaps to 2 or 4

[tacit seal]

Also experiencing this 👍