navigator and window move up till gone

[GoogleCodeExporter]

What steps will reproduce the problem?
1. 1 Window, KJV open
2. In Navigator: choose any book and chapter
3. then PgDown, the navigator and the window move up.
4. pressing it twice, they are totally gone.

PgUp brings them back again.
When you click into the window first, then PgDown, this works like expected:
What is the expected output? What do you see instead?
That PgDown moves one page down within the Bible text 

What version of the product are you using? On what operating system?
xs 3.4 Linux/Firefox

Please provide any additional information below.
See attached screenshot

Original issue reported on code.google.com by wolfgang...@wycliff.de on 13 Jun 2012 at 3:35

Attachments:

• xs_navigator_disappears.jpg

[GoogleCodeExporter]

Fixed in 3.5+.

Original comment by gpl.prog...@gmail.com on 3 Jun 2013 at 10:00

• Changed state: Fixed