I have noticed a few (Error 50x) appearing especially if I sort by new. A sort of work around I have found is going to someones username to see what they post.
This post for example did not appear but I was able to find it by going to moderators in the sidebar and clicking Ernest.
Working on Kbin is a lot of work and as far as I know Ernest is a solo dev. So we should be patient and give him all the time he needs.
DessertStorms