I followed the instructions at [HOW TO] Flash a custom ROM on FP3 with GSI and installed LOS 16.0 from https://sourceforge.net/projects/andyyan-gsi/files/lineage-16.x/lineage-16.0-20191017-UNOFFICIAL-treble_arm64_bvN.img.xz/download
But now I don’t have a back or home button. If I open one app, I can’t got back to the launcher or switch to another app.
Does anyone else have this? And ideally knows what to do?