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HEAD, GTK+ 2.6.7, KDE 3.4.1, X.org 6.8.2, Linux 2.6.12 When I type some characters in the preference page filter, a drop-down menu (I believe this is a shell?) appears. I'm not sure how this menu/shell is being defined, but it is causing problems on Linux. Keyboard focus disappears when the shell is visible, and the main workbench window deactivates. This means that none of the following keys work: Tab, Esc, arrow keys, or any ASCII characters. This means the shell can't be dismissed by the keyboard, nor can the filter be further narrowed. Moving the preference dialog with the mouse causes the shell/menu to disappear.
Tod, can you route this please?
It's intentional that moving dialog causes the popup shell unvisible. Tod and I will try to figure out other problems.
I would like to recommend a rollback of Bug 102081 for 3.2 M1. This problem is not trivial to fix, and seems to be quite bad on Linux.
Dani, cc'ing you in case you have some general wisdom with pop-ups/focus/platforms etc..
For the content assistant we wrote our own closer that tracks special keys so that e.g. the proposal popup can be closed with "Esc" while the keyboard focus is still in the StyledText widget or that Tab transfers the focus to the proposal popup.
With the changes to resolve bug 102081, the drop down combo is no longer used. So this bug is now invalid.