Drawing radicals ?

I'm trying to draw


For me it would make sense that for the oxygen that is on the hydrogen and that is a radical we could just use the 'X' tool and put [O] to show that there is no further modification of the O. But apparently JSME adds anyway hydrogens. Don't know if it is the expected behavior.

Start by reproducing the drawing shown in the issue with the X tool and [O], then inspect how JSME handles radicals and implicit hydrogens. Done means the expected behavior is established and the editor no longer adds unintended hydrogens, with a regression check for this drawing case.

Written by the indexing model from the issue text.