The issue was highlighted in this Reddit post 2 days ago and prompted OnePlus 3 users to take a second look at the back of their phones. Soon enough, many surprised OnePlus 3 users took to the forum to express displeasure at the varying degrees of crookedness.
There is no definite pattern to the problem. Some users spotted the tilted rear camera bump only after careful observation while others said that the tilting was quite blatant. The overall consensus is to question the aesthetics and build quality of a $500 flagship smartphone. OnePlus may have to revamp processes in the Quality Check department.
The issue was first reported on the OnePlus 3T Colette edition. If you notice a lopsided rear camera on your OnePlus 3 or OnePlus 3T then be sure to let us know in the comments.