Joris Kinable

Oddly, substituting this: 0/"$r$"; 13/"$t$"; 2/"$u_{2}$"; 3/"$u_{3}$"; 4/"$u_{4}$"; 5/"$u_{5}$"; 6/"$u_{6}$"; 7/"$u_{7}$"; 8/"$u_{8}$"; 9/"$u_{9}$"; 10/"$u_{10}$"; 11/"$u_{11}$"; 12/"$u_{12}$"; by this (i.e. simply reordering) also fixes the problem: 0/"$r$"; 2/"$u_{2}$"; 3/"$u_{3}$"; 4/"$u_{4}$"; 5/"$u_{5}$"; 6/"$u_{6}$"; 7/"$u_{7}$"; 8/"$u_{8}$"; 9/"$u_{9}$"; 10/"$u_{10}$"; 11/"$u_{11}$"; 12/"$u_{12}$"; 13/"$t$";

Tikz graph layered layout incorrectly counts number of incoming edges in node

Currently one cannot use the layered layout in combination with the non-default Node Ranking minimum height layer assignment because of the above bug. This causes an error to be thrown.

Bug+fix in NodeRankingMinimumHeight