Hey everyone - just wanted to give an update. I have tried my above technique on my Pixel 3 (blueline) running LOS18.1, 19 and 20. Working fine.
An important part of getting AA working (and hence S2A etc.) is having the right version of GAPPS installed. I'm using arm64 builds of MindTheGapps, and having no problems. If you're trying to install this and it's not working, I'd strongly recommend trying again using MindTheGapps as your gapps package.
An important part of getting AA working (and hence S2A etc.) is having the right version of GAPPS installed. I'm using arm64 builds of MindTheGapps, and having no problems. If you're trying to install this and it's not working, I'd strongly recommend trying again using MindTheGapps as your gapps package.