If you're upgrading from official lineage 18.1 or just updating from my unofficial 19.1, do the following:
1. go into recovery mode.
2. sideload the official 19.1 rom zip.
3. if you have gapps installed, or any other zips (like magisk), continue to next step. Otherwise, you're done.
4. tap "Advanced", then "Reboot to recovery".
5. now sideload android12.1 gapps zip and/or magisk zip.
Seems like the rotation icon is present on the bottom left when using Gesture navigation, and its on the bottom right when using 3-button navigation. However when using 2-button navigation (which is what I've been using), there is no rotation button.
Yep there's no rotation for 2 button navigation
Yeah that seems to have done it. There's no discernible effect on battery life, though active edge service does show 1% in battery usage. I'll take it.
Its Fixed now . i think its just a problem with the first one i downloaded it was corrupted