[NTG-context] aligning rotated text in a natural table

I am trying to align rotated text horizontally and vertically in a table cell. Vertically is no problem, horizontally it fails. Non-rotated text is, of course, fine. What can I do to fix the problem? Thanks for suggestions. Martin using: mtx-context | current version: 2019.05.18 10:42 PDF of my output is attached. MWE: \starttext \setupTABLE[c][1][width=7mm] \setupTABLE[c][2][width=30mm] \setupTABLE[r][each][align={lohi,middle},height= 50mm] \bTABLE \bTR \bTD \rotate[270]{\switchtobodyfont[8pt]a bit more text} \eTD \bTD blah \eTD \eTR \eTABLE \stoptext