Testcase URL located at https://bugzilla.mozilla.org/show_bug.cgi?id=294323
was used (it is made by bug's author).
!Test at your own risk when visiting Bugzilla!
Test url is at the beginning of the Bugzilla entry (ww.krickelkrackel.de/testing....) and named as onFullScreen() issue. Some untrusted events has been used.
Bugzilla report's Status: is RESOLVED and FF1.0.5 is not affected (no Suite nightly etc. in this machine).
Results:
Status Bar, Tab Bar, and dropdown menus disappeared after clicking krickelkrackel.de test link. New browser window (Ctrl+N) was needed to open or browser restart needed to use dropdown menus etc.
According to MFSA2005-45:
"The problems ranged from minor annoyances like switching tabs or entering full-screen mode".
I have contacted Netscape Communications that version 8.0.2 is affected to this earlier this week.
It was not possible to use keyboard shortcuts like Alt+F to try exit the browser or to enable menus from View dropdown menu etc.
BUT:
'Don't try this at home' if NS is your only installed browser and you have no a newinstallation package for NS or FF etc. downloaded.
But very interesting is that this happened only with XP Home Edition, the XP Pro installation of my another computer was immune.
I'll send a screenshot. For example, there is no focus in main title bar etc.
Please no comments about my UA, because I have now 1.0.4 installed to see how this works in 1.0.4 (and there is no Finnish version of 1.0.5 available like we know). But I have downloaded and used 1.0.5, of course!
Edit: It is here:
(Original image was too wide, resized by Antony. Please resize images before adding them for inline images.)
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fi-FI; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
. This is a permission too 
. An updated image is available, i.e. ...UISD.PNG link works.
