I just retested this and it works as designed, I am unable to reproduce, this will sort by the runtime in the metadata
Will add a feature request to calculate runtime using mediainfo if its missing.
Yes, well can’t be sure its 100% but almost.. Media Browser also displays the runtime on the movie info screen so the sorted ones I've checked is sorted wrong. I am using the new theme, diamond I think it’s called
This is true for all the other reports I've made, year, rating, runtime