[NTG-context] Math cases

Dear list, I'm using ConTeXt version 2021.07.22 19:16 and the following code typesets both columns in math mode \starttext \startformula \delta_{ij} = \startcases \NC 1 \NC if i = j \NR \NC 0 \NC otherwise \NR \stopcases \stopformula \stoptext The wiki states that the second column should be typeset in text mode. Is this a bug or does ConTeXt now typeset the second column in math mode by default? Thanks, Jack