There's one report at the StatixOS Telegram chat of a user who installed the August build and changed the boot image of this build with the one from a previous build not affected with the screen shift. Apparently, this worked.
Flashing the contents of the attached files using fastboot should make your device to use last firmware for Android Pie, without losing your current ROM installation.You should be able to flash the older Pie firmware without wiping from what I have read but I have not tried that yet. I might try it with the very latest firmware of Pie, PQ1A.190105.112 and see if it screws anything up without wiping the phone. Anyway I always to a backup of the phone to the cloud and also of Whatsapp before I start messing around just in case I have to wipe and so far all my restores have worked perfectly, but yes it is a pain to have to setup wifi's and add back in BT devices and setup security and any double authentication apps you use. Getting used to it now though.