617975 - opened mails are scrolling back to the top when switching between them

Status: RESOLVED DUPLICATE of bug 487386

(Thunderbird :: General, enhancement)

Description

[csongor]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.12) Gecko/20101027 Lightning/1.0b2 Thunderbird/3.1.6

I have to check more long mails at the same time so I open them by double clicks. Each will open a new tab. I start to read the first one and I scroll down one or two pages. Then I start to read the second one and scrolling down in this mail too. 

Now when I switch back to the first email then it does not remember where I was scrolled down to but it automatically goes back to the top of the mail. This means if I have two ten-pages long emails then I have to scoll down all the time while I am comparing them line by line. This drives my crazy. :) 

Reproducible: Always

Steps to Reproduce:
1. send a 500 lines long to yourself
2. send it (or an other one) to yourself again
3. when you got them then open them by doulble clicking
4. scroll down to the middle of the first opened mail
5. switch to the second long email
6. switch back to the first mail
Actual Results:  
Now You can see the very first lines of the mail althoug two clicks before You were somewhere in it's middle.

Expected Results:  
each opened mail should memorize his own y coordinates (where it's content was scrolled down to) and move me back to that particular position.

Comment 1

[Ludovic Hirlimann [:Usul]]

We already have this on file (and that other bugs should be made dependant of 392328)