qbrowse misses files after changing filter

[IWATA Hidetaka]

In qbrowse dialog, some files which should be shown are not shown after changing filter.
This problem is in both trunk and 0.18

To reproduce:
# init branch and add folders
bzr init test
cd test
mkdir a\b1
mkdir a\b2\c1
mkdir a\b2\c2
bzr add
bzr commit -m "prepare"

# add 2 unversioned files
echo > a\b2\c1\foo.txt
echo > a\b2\c2\bar.txt

# execute qbrowse
bzr qbrowse

And click 'Filter' and check off 'Unchanged', and expand tree nodes manually. Then, foo.txt is not shown.

Clicking 'Show' or 'Refresh' will restore tree.
Or expanding tree nodes before changing filter, correct tree will be shown.

Version info:
Bazaar (bzr) 2.1.1
  Python interpreter: C:\Develop\Python26\python.exe 2.6.2
  Python standard library: C:\Develop\Python26\lib
  Platform: Windows-XP-5.1.2600-SP3
And PyQt version is 4.5.4

[Alexander Belchenko (bialix)]

I can't reproduce this neither with qbzr 0.18.5 nor with trunk.

[IWATA Hidetaka (hid-iwata)]

Thank you.
In my environment, this problem was gone by installing newest pyqt (PyQt-Py2.6-gpl-4.7.3-2.exe).