I am running rounup 0.4.0 with a heavily modified database
scheme and modified html templates, but the same problem
exists in the default schemes:

- select "My Issues"
- the URL has a filter for "assignedto=<user>",
  so the result is okay
- modify some setting in the view customization,
  then redisplay
=> the filter for assignedto is lost and the view
   shows all issues

I have added the following lines to my issue.filter:
<property name="assignedto">
 <tr><th width="1%" align="right" class="location-bar">Assignedto</th>
 <td><display call="field('assignedto')"></td></tr>
</property>

Now I have a filter that is usable in the sense that
one can select a value (in a drop-down menu, which as
far as I remember should become a text box) and redisplay
to get a correct listing, but this filter is always set
to "no selection" after the redisplay, so "My Issues"
still doesn't survive a redisplay.