Reoccurring issue: arrows

[Sebastian Fischmeister <Sebastian Fischmeister uni-konstanz de>]

Hello.

All of the developers are doing a really great job in improving dia
and coding new features. But there is one issue that's in dia since
the very first days:

Draw a line, select the filled-triangle arrowhead, and set the line
width to at least 0.5. See it?

I already started constructing my own arrows (a polygon and a line). I
don't think that's the intended use of dia.

Are there any plans to get rid of this problem?

Regards,
  -Sebastian