Numpad arrows by shift+Num 4/Num 6 shouldn't really even work in the first place, but plain Num 4 and Num 6 should, as long as they're added as keybinds in the reader settings. Which they are by default, but we didn't reset anyone's defaults so it didn't update to everyone.
And yes, of course it's using code
. keyCode
is deprecated and key
is layout-dependent.
Shift+Num 8/Num 2 working is weird and unexpected, should look into that.