Version: (using KDE KDE 3.3.92) Installed from: Compiled From Sources Compiler: gcc 3.4.4 OS: Linux hi if you push your mouse over a button then the tooltip is shown, but if you do this first time it is not antialiased, move the mouse away and quick again on the button it is aliased. Move away the mouse, if you wait a little bit the tooltip is again not antialiased if you move the mouse again on the button. that does also work when you move your mouse in kmail subject's. tested it also on knoppix 3.7 there is the same problem. greetings from archlinux maintainer
sorry gcc is 3.4.3 not 3.4.4
temporary workaround for this is to disable the toolbox effect in kcontrol under appearance-->style-->plastik-->effects Tool Tip Effect
This does not affect only KDE based applications, but all Qt based applications. I found the same behaviour while running Psi (Qt based) under KDE. It might be a bug in Qt's tooltip rendering (using fading).
*** Bug 126222 has been marked as a duplicate of this bug. ***
This behavior is not present in Qt4. Closing as invalid, since it was a Qt thing not a KDE thing.