This was a problem on version 0.9-20051454091 but has since become worse in version 0.9-2020062560240.
Now if you reboot or shut down and restart /e/ on the OnePlus pro 7. The OS can not find the sim card. If you remove the sim card, /e/ shuts down within 5 seconds and reboots into the lineage recovery screen. I have been trying to get /e/ to find the sim all morning without any success. I think I will try a change out of the sim card next however I do not think its a card problem since the card I am using is only a month old.