My friend and I are having trouble with the Pixel Extended ROM upon restarting our phones with the ROM installed.
It was a clean flash from TWRP with no discernable errors. Followed the XDA picture guide for vayu to the letter. But the other day when I restarted my phone, it kept booting into TWRP and (even though I didn't set it to restart into recovery). Upon choosing the reboot option from TWRP I'm greeted with the "No OS installed" error. My internal storage also showed 0gb on TWRP. Maybe it's an encryption issue, but I'm not sure. I formatted and reflashed the ROM since then, but I'm afraid of restarting the phone now.
Then my friend today, his battery ran out for the first time since he flashed the ROM, and when he charged it and booted up he got bootlooped.
I'll also post this question on the actual ROMs XDA thread, just thought I'd try my luck here too.
We're both on vayu, previously had default MIUI installed. Pixel Extended version is 3.1. If there's any more information you need please ask.