I’ve moved the «Tools» menu to the left to have a firefox-like interface. When I click on the «Tools» button, the menu appear on the right of the screen, at the original position of the button.

Reproducible: Always

Steps to Reproduce:
1. Move the «Tools» menu on the left (left click → «Configure Main Toolbar»).
2. Click on the «Tools» button.
Actual Results:  
The menu open on the right of the screen event if the button is on the left of the screen.

Expected Results:  
The menu should open like any other menu, under the parent button.