Newest unofficial LineageOS16.0 (for SD835 Pro1) is available. At
https://findus.zwergenschaenke.net/~puma/linux.html#lineagepro1
get the ROM dated 20241116.
Changes since last month:
Backported security fixes up to the "1 November 2024" ASB.
Update system webview and browser to Chromium 130.0.6723.73.
Have fun.
So dirty flashed without wipe from last official 21 to this 22.
First flashed recovery (boot) and then lineage.
***gapps are included inside OddSolutions builds!
All without problem - phone boots normally without any error.
Then was only needed to reflash magisk for root access.
Interesting, on my original screen the corners were purely perma black, no amount of brigthness did anything with them. The replacement screen is similar to your defect, a little bit of stuff is visible, like it has that black layer on top of it but the pixels are still toast for the most part.
(lineage-21.0-20241117-nightly-pro1-signed.zip on November 1 security patch installed smoothly (*) using adb sideload and MindTheGapps-14.0.0-arm64-20240925_175633)
And we still can only select one keyboard layout, so no easy layout switching, for multilingual usage.