Need much more info. I take it “custom ROM” = /e/? How did you install ROM, fastboot or TWRP? If the latter, which version. Touch not working in TWRP or the ROM itself? Did you come up from Nougat or down from Q?
I’ve had touch not work in the ROM a couple of times if the official TWRP was used. In your case I’m not sure what’s going on yet.