So far, on all the roms I tried that use kernel 3.4 (Evervolv Nougat, DirtyUnicorns Oreo, LineageOS Nougat), my touchscreen sometimes recognizes taps as super quick double taps instead, and also sometimes thinks I've lifted my finger very briefly in the middle of tap-and-dragging. On jcsullin's and MLQ's builds of CM/Lineage 11 (using kernel 3.0), I don't have that issue at all.

Is there a fix I need to apply to make the touchscreen work as intended?