Arrow head gone mad with dia 0.88.1

[Campo Weijerman <campo raleigh ibm com>]

Hi there,
In our project we have got a couple of simple UML class diagrams drawn with a
previous version of Dia (0.83 initially, then ported to 0.86) When trying to
load these files in Dia 0.88.1, most of the dependencies seem to have become
disconnected from the classes they connect.  Trying to move one of the classes
seems to fix this: all of its dependencies all of a sudden snap in place. 

However, there still remains a problem with arrowheads.  I'm attaching a
JPEG image to show the problem as well as the corresponding .dia file.

Moving the line between the classes will cause the arrowhead to point either
up or down, but it consistently refuses to point in the only reasonable 
direction. Am I doing something wrong here or is this a bug?  On this list 
I have not seen any other people complaining about this since the release
of 0.88.1

Regards,
-- 
Campo Weijerman <campo@raleigh.ibm.com>
<?xml version="1.0"?>
<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
  <dia:diagramdata>
    <dia:attribute name="background">
      <dia:color val="#ffffff"/>
    </dia:attribute>
    <dia:attribute name="paper">
      <dia:composite type="paper">
        <dia:attribute name="name">
          <dia:string>#A4#</dia:string>
        </dia:attribute>
        <dia:attribute name="tmargin">
          <dia:real val="2.8222"/>
        </dia:attribute>
        <dia:attribute name="bmargin">
          <dia:real val="2.8222"/>
        </dia:attribute>
        <dia:attribute name="lmargin">
          <dia:real val="2.8222"/>
        </dia:attribute>
        <dia:attribute name="rmargin">
          <dia:real val="2.8222"/>
        </dia:attribute>
        <dia:attribute name="is_portrait">
          <dia:boolean val="true"/>
        </dia:attribute>
        <dia:attribute name="scaling">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="fitto">
          <dia:boolean val="false"/>
        </dia:attribute>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="grid">
      <dia:composite type="grid">
        <dia:attribute name="width_x">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="width_y">
          <dia:real val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_x">
          <dia:int val="1"/>
        </dia:attribute>
        <dia:attribute name="visible_y">
          <dia:int val="1"/>
        </dia:attribute>
      </dia:composite>
    </dia:attribute>
    <dia:attribute name="guides">
      <dia:composite type="guides">
        <dia:attribute name="hguides"/>
        <dia:attribute name="vguides"/>
      </dia:composite>
    </dia:attribute>
  </dia:diagramdata>
  <dia:layer name="Background" visible="true">
    <dia:object type="UML - Class" version="0" id="O0">
      <dia:attribute name="obj_pos">
        <dia:point val="17.75,7.6875"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="17.7,7.6375;21.2967,9.9375"/>
      </dia:attribute>
      <dia:attribute name="elem_corner">
        <dia:point val="17.75,7.6875"/>
      </dia:attribute>
      <dia:attribute name="elem_width">
        <dia:real val="3.4967"/>
      </dia:attribute>
      <dia:attribute name="elem_height">
        <dia:real val="2.2"/>
      </dia:attribute>
      <dia:attribute name="name">
        <dia:string>#Class#</dia:string>
      </dia:attribute>
      <dia:attribute name="stereotype">
        <dia:string/>
      </dia:attribute>
      <dia:attribute name="abstract">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="suppress_attributes">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="suppress_operations">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="visible_attributes">
        <dia:boolean val="true"/>
      </dia:attribute>
      <dia:attribute name="visible_operations">
        <dia:boolean val="true"/>
      </dia:attribute>
      <dia:attribute name="foreground_color">
        <dia:color val="#000000"/>
      </dia:attribute>
      <dia:attribute name="background_color">
        <dia:color val="#ffffff"/>
      </dia:attribute>
      <dia:attribute name="attributes"/>
      <dia:attribute name="operations"/>
      <dia:attribute name="template">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="templates"/>
    </dia:object>
    <dia:object type="UML - Class" version="0" id="O1">
      <dia:attribute name="obj_pos">
        <dia:point val="24.9375,7.625"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="24.8875,7.575;28.4842,9.875"/>
      </dia:attribute>
      <dia:attribute name="elem_corner">
        <dia:point val="24.9375,7.625"/>
      </dia:attribute>
      <dia:attribute name="elem_width">
        <dia:real val="3.4967"/>
      </dia:attribute>
      <dia:attribute name="elem_height">
        <dia:real val="2.2"/>
      </dia:attribute>
      <dia:attribute name="name">
        <dia:string>#Class#</dia:string>
      </dia:attribute>
      <dia:attribute name="stereotype">
        <dia:string/>
      </dia:attribute>
      <dia:attribute name="abstract">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="suppress_attributes">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="suppress_operations">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="visible_attributes">
        <dia:boolean val="true"/>
      </dia:attribute>
      <dia:attribute name="visible_operations">
        <dia:boolean val="true"/>
      </dia:attribute>
      <dia:attribute name="foreground_color">
        <dia:color val="#000000"/>
      </dia:attribute>
      <dia:attribute name="background_color">
        <dia:color val="#ffffff"/>
      </dia:attribute>
      <dia:attribute name="attributes"/>
      <dia:attribute name="operations"/>
      <dia:attribute name="template">
        <dia:boolean val="false"/>
      </dia:attribute>
      <dia:attribute name="templates"/>
    </dia:object>
    <dia:object type="UML - Dependency" version="0" id="O2">
      <dia:attribute name="obj_pos">
        <dia:point val="21.2467,8.3875"/>
      </dia:attribute>
      <dia:attribute name="obj_bb">
        <dia:rectangle val="21.1967,7.575;25.3875,9.175"/>
      </dia:attribute>
      <dia:attribute name="orth_points">
        <dia:point val="21.2467,8.3875"/>
        <dia:point val="21.2467,8.375"/>
        <dia:point val="24.9375,8.375"/>
        <dia:point val="24.9375,8.325"/>
      </dia:attribute>
      <dia:attribute name="orth_orient">
        <dia:enum val="1"/>
        <dia:enum val="0"/>
        <dia:enum val="1"/>
      </dia:attribute>
      <dia:attribute name="draw_arrow">
        <dia:boolean val="true"/>
      </dia:attribute>
      <dia:attribute name="name">
        <dia:string/>
      </dia:attribute>
      <dia:attribute name="stereotype">
        <dia:string/>
      </dia:attribute>
      <dia:connections>
        <dia:connection handle="0" to="O0" connection="4"/>
        <dia:connection handle="1" to="O1" connection="3"/>
      </dia:connections>
    </dia:object>
  </dia:layer>
</dia:diagram>

mad-arrow.jpeg