When I want to scroll through my hotbar in minecraft the item I have selected doesn't change on the first tick of scrolling when the previous scroll tick was in the opposite direction. For example:

1. Start on item 0 in the hotbar
2. Scroll up two ticks: item 2 gets selected
3. Scroll down 1 tick: Nothing happens.
4. Scroll down 1 more tick: item 1 gets selected
5. Scroll down 1 more tick: item 0 gets selected.

In the above example I would have expected during step 3 that item 1 would have gotten selected, rather than nothing happening.

It appears the hotbar does not move on a tick of scrolling when the previous tick was in the opposite direction.

I initially thought there might be something weird going on with either my mouse or my OS, however testing multiple apps with scrolling functionality (firefox, gedit, gnome-terminal) they don't have this issue.

This problem appears in both singleplayer and multiplayer worlds, as well as survival and creative.