When the first line of the following example is removed, all is well.
With it present, the image in the layer has the text "image" added to
the image. This problem is not present in, inter alia, TL18.
\setuptagging [state=start]
\setupexternalfigures [location=default]
\definelayout [testpage]
\definelayer [testpage]
[width=\paperwidth,height=\paperheight]
\startsetups [testpage]
\setlayerframed [testpage]
[preset=rightbottom,hoffset=.25in,voffset=.25in,
background=color,backgroundcolor=yellow]
{\externalfigure[cow.pdf]}
\stopsetups
\setupbackgrounds [page]
[setups=testpage,background={testpage}]
\starttext
\startmakeup [testpage]
\framed[background=color,backgroundcolor=yellow]
{\externalfigure[cow.pdf]}
\stopmakeup
\stoptext
--
Rik
