We have balloon popups displaying SNP metadata and noticed that the mouse cursor often has trouble finding the spot to trigger the balloon. >From a look at the imagemap and the result of turning DEBUG_RECTANGLES on in Bio::Graphics::Browser2::RenderPanels, the diamond glyph is getting a region one pixel wide and ten pixels high (using the default height=0 glyph parameter). A screenshot of the debugging rectangles for the same region above is attached.
Is there a configuration option for this glyph that would increase the imagemap width to the same as the height, or am I perhaps missing something else? All help is appreciated.