1327592 - Many window.open() windows stay in history -> "Restore closed windows"

Status: NEW

(Firefox :: Session Restore, defect)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Open new window (Ctrl+N). Close that window
2. Open http://stewd.io/pong/ . Click "Play" on the page. Click "pause". Close 3 opened windows
3. Repeat Step 2 five more times
4. Click History toolbarbutton on toolbar to open history
 (bonus - there's already bug, but you can continue)
5. Open new window (Ctrl+N). Close that window
6. Click History toolbarbutton on toolbar to open history

AR:
 Step 4 - "Restore closed windows" section displays 19 recently closed windows
 Step 6 - "Restore closed windows" section displays 3 recently closed windows

ER:  Either X or Y.  X is better
 X) Step 4 - "Restore closed windows" section should display 3 recently closed windows
 
 Y) Step 6 - "Restore closed windows" section should display 19 recently closed windows
 Z) Step 6 - "Restore closed windows" section should display 20 recently closed windows

Explanation of X,Y,Z
 X - Normal UI;  Only 3 windows allowed. Any extra window is deleted forever. All windows are equal
 Y - Weird UI;   The same as (X), but window.open() windows are are special: they disappear
     not immediately, but only on shutdown (when user finishes session).
 Z - Weird UI;   The same as (X), but all windows disappear not immediately, but only on shutdown.

Comment 1

[u554753]

Can reproduce with the following specs  	
Mozilla/5.0 (Windows NT 6.1; rv:54.0) Gecko/20100101 Firefox/54.0

but not sure if this is working as intended or not.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The severity field for this bug is relatively low, S3. However, the bug has 17 votes.
:dao, could you consider increasing the bug severity?

For more information, please visit auto_nag documentation.

Comment 3

[BugBot (nomail) [:suhaib / :marco/ :calixte]]

The last needinfo from me was triggered in error by recent activity on the bug. I'm clearing the needinfo since this is a very old bug and I don't know if it's still relevant.