I applied this to the current codebase. I think I got it right (the
patch is almost 10 years old).

Using ./demo.py with the url:

http://localhost:9017/demo/issue?status=-1%2C1%2C2%2C3%2C4%2C5%2C6%2C7&@sort=-activity&@search_text=&@columns=id%2Cactivity%2Ctitle%2Ccreator%2Cstatus&assignedto=.&@group=priority&@dispname=Your%20Issues&@filter=status%2Cassignedto&@pagesize=50&@startwith=0

and logged in as the demo user, I am not getting any issues although
there are two issues owned by demo.

I have attached my patch to the 2016-06-10 roundup trunk/default.

If anybody wants to try to fix this feel free.

Also if anybody can see a place to add this as a test case that would
also be welcome.

I am keeping this open but marking as out-of-date. If somebody has a
better idea of how to mark this feel free.