piroor/treestyletab — Issue #246: Tooltip persists over other windows
Author: Vanav
Created: 2012-02-16 02:31:52+00:00
State: open

In some cases tree tooltip with tab list persists over other windows while Firefox window is in background. The only way to hide tooltip is to move mouse to it or to move mouse to Firefox window.

This issue is hard to reproduce, but always possible.
1. Choose one tab button. Move any other window, so it partially overlaps half of a tab button.
2. Without focusing Firefox, move mouse over a tab. Wait for some seconds till the moment when tooltip should appear.
3. Without leaving the area of tab, move mouse over other active window. Tooltip will keep showing permanently on screen, until you move mouse over it, or over visible part of Firefox window ([screenshot](http://screencast.com/t/EmfAKY4MmGp)).
My environment: Windows 7 x64, Firefox 10.0.1.

Notes:
- it is more easy to reproduce when CPU is loaded,
- it is not required that mouse will not leave area of tab while moving to other window. So, mouse may hover some other tabs on its way. But it is more easy to reproduce this way.
- some time ago I've first seen this issue with “All In One Sidebar” addon and its multiline tooltips. I can't reproduce it now with AiOS.
- some other users report this issue with any Firefox tooltips.
- I have “extensions.treestyletab.tooltip.mode = 0”, issue occurs less frequently, but tooltip still persists sometimes during a day.

This may be a Firefox bug, but personally I can reproduce it only with TST rich tooltip (maybe this bug is already fixed for simple default Firefox tooltips?). The most exact description of this issue is [bug 631462](https://bugzilla.mozilla.org/show_bug.cgi?id=631462). Some other similar issues: [bug 148624](https://bugzilla.mozilla.org/show_bug.cgi?id=148624), [bug 618733](https://bugzilla.mozilla.org/show_bug.cgi?id=618733) and [bug 131131](https://bugzilla.mozilla.org/show_bug.cgi?id=131131).

If it is hard to fix, can you please give an setting to disable such tooltips (rich TST tooltip with links) completely?