Issue: When I open a chest I cannot scroll through the inventory using the arrow buttons or keybinds. Additionally, the left/right arrow buttons to move between chests do not do anything when clicked. I do not receive any errors in the console for these issues.

Workaround: If I set the UI scale to 75% then all of these options work properly. I am able to scroll using keybinds and clicking arrow buttons. Even switching between chests works after the scale change.

Here is a beta version which should fixed this problem. It comes from repo owner's discord channel.
BetterChests 2.18.5-beta.1.zip