combo r6m2 and rf-s 18-150

While I am thinking about the R5ii I still love the R6ii and am pushing it as far as I can. Yesterday I decided to try the RF-S 18-150 lens on it to see what would happen, wasn't sure would it vignette it what size files would I get and so on. I did not get any vignetting even at 18mm, the...