Versions 00 through 09
What does not
With the Java plugin, running a java app from the browser in fullscreen (I used Runescape to test this) will keep you from backing out of fullscreen back to the browser again. If you need to (or just feel like it) use fullscreen mode for java apps, when done, hit CTRL+Esc (for KDE 4 at least) to bring up the system monitor and hangup the firefox process. Your screen resolution will be stuck in whatever mode you ran it in so I suggest keeping an icon near the mid-left side of the screen for your terminal so you can restore the desktop resolution.
What was not tested
Some plugins (Firegesture, Shockwave, etc.) but that's it.
I use the Windows version of Firefox now whenever I feel like playing RuneScape in fullscreen mode. The small bug with fullscreen mode doesn't really outweigh the benefits of using it, since trying to run RuneScape in the Linux version of Firefox keeps the user from being able to run fullscreen mode.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||Ubuntu 20.04 "Focal" (+ variants like Kubuntu)||Jun 16 2021||5.0.4||Yes||Yes||No||Platinum||Neale Rudd|
|Show||Ubuntu 18.04 "Bionic" amd64 (+variants like Kubuntu)||May 29 2019||4.9||Yes||Yes||No||Platinum||Aaron Franke|
|Show||Ubuntu 11.04 "Natty" amd64 (+ variants like Kubuntu)||Nov 21 2011||1.3.33||Yes||Yes||Platinum||AndrÃ© H.|
|Show||Ubuntu 11.10 "Oneiric" i386 (+ variants like Kubuntu)||Oct 12 2011||1.3.30||Yes||Yes||Platinum||GTRsdk|
|Show||Ubuntu 10.04 "Lucid" amd64 (+ variants like Kubuntu)||Jun 23 2011||1.3.22||Yes||Yes||Platinum||AndrÃ© H.|
|Bug #||Description||Status||Resolution||Other apps affected|
|4045||Wine is not reading the DPI setting from X - and is defaulting it to a dumb value||NEW||View|
|8195||Detached menus in Microsoft Office 2003/Firefox3/builtin notepad.exe||NEW||View|
|14771||Firefox/Thunderbird complains it is not the default browser on every startup ('HKEY_CURRENT_USER\\Software\\Classes' should be merged into 'HKEY_CLASSES_ROOT')||NEW||View|
|19089||Mozilla Firefox doesn't detect IE as installed? Doesn't attempt to import settings from IE||NEW||View|
|23134||iexplore does not correctly detect proxy details||NEW||View|
|26304||Rayman 2 Demo system menu item doesn't work||NEW||View|
After a little more testing, Firefox 3 seemed to show that it will run equally as stable in Windows Vista mode as it will in Windows 2000 mode. If you want the effects that comes from the Vista version of Firefox 3 (button colors change, GUI changes slightly), then put it in Vista mode.
If you are using Compiz-Fusion on your linux installation and wish to use Firefox, you need to disable it or Firefox will refuse to minimize or allow other windows to be on top of it without manually setting Firefox to sit behind all windows. It doesn't always seem to work, but the problem seems less frequent this way.