Setting Free Cursor position relative to a /VERT trace

My goal is to set a free cursor on a graph, using the axis values. This works right when it is a normal trace, but not when it is plotted /VERT. I hope this can be fixed.

An example of correct behavior when plotted as usual:
make/O/N=(1000) wtest
setscale/P x,0,1e-3,"time",wtest
wtest=10*sin(16*pi*x)/x
display wtest
cursor/F A wtest 0.1,250


Now try:
display/Vert wtest
cursor/F A wtest 0.1,250


Interestingly, the cursor is put where it should have been, had the position of the axes been exchanged. I'm hoping for a fix, knowing WaveMetrics, it will not be far away :)