813889 - Problem showing menu with a secondary monitor

Status: UNCONFIRMED

(Firefox :: Menus, defect)

Description

[Sergio]

Attachment: FF error.png

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0
Build ID: 20121119183901

Steps to reproduce:

I have a dual monitor system with W7 updated and latest Firefox v. 17.0
- start Firefox on secondary monitor (on the right)
- move FF window on primary monitor (on the left)
- Click on upper left FF dropdown menu 
   . the menu is not shown 'till you hoover over a item
   . the menu flickers while dropping down
- hoover over an option with a sub menu



Actual results:

If the submenu area is NOT overlapping primary menu:
- The sub menu is shown (while flickering)  like hoovering "Option" menu
- The primary menu disappears (its frame remains visible) when you hoover over any sub menu items (see attached image)

If the submenu area is overlapping primary menu:
- The sub menu is not shown (like hovering "Print ..." option)
- The sub menu is appears when hoovering any sub menu options