odd behaviour with overly long lines in irssi

[Miia Sample]

Binary package hint: screen

Description:
Overly long lines not to wrap correctly and making the content of the irssi window previously visited to "leak" where the wrapped line should continue to. This leaked text can be copypasted, but it wanishes if the screen is redrawn with ctrl-l.

server running irssi in screen:
xen virtualized Ubuntu, upgraded from Dapper LTS to Hardy LTS,

Linux myrtti.fi 2.6.19-4-server #2 SMP Sat Oct 6 01:59:49 UTC 2007 i686 GNU/Linux
Description: Ubuntu 8.04
screen 4.0.3-7ubuntu1
irssi 0.8.12-3ubuntu3

client computer running ssh-client connecting to the server:
Description: Ubuntu 8.04
Using xubuntu, enabled fglrx, hardy-proposed

happens with vte's like:
* Terminator 0.9 bzr 306
* xfce4-terminal 0.2.8-4ubuntu1
* tilda 0.09.4+cvs20071012-1
* eterm 0.9.4.0debian1-2ubuntu3

DOESN'T HAPPEN if:
server running irssi/screen is
Linux kengu 2.6.24-12-generic #1 SMP Wed Mar 12 23:01:54 UTC 2008 i686 GNU/Linux
screen 4.0.3-7ubuntu1
irssi 0.8.12-3ubuntu3

Expected:
URL's and long lines wrap up nicely, url's are clickable, no information leaks from previous windows to the current one.

Happens instead:
see attachment files

[10:43] <+Myrtti> it really freaks me out to see "confidential" text mixed up in a casual conversation
[10:43] <+Myrtti> like "so which venereal disease did you get from that idiot" on #ubuntu-offtopic

[Charlie Kravetz (cjkgeek)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Thanks in advance.

I am curious. If the bug only exists in a virtual server, why would the source package not be the virtual server package? Does this happen in a hardware install also?

[Charlie Kravetz (cjkgeek)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!

[Tollef Fog Heen (tfheen)]

I can see the same bug. You need to turn off screen's folding of long lines, typically by pressing "C-a r", then it's trivially reproducable. You can get rid of it again by pressing C-a r. It looks like something in screen isn't repainting the line correctly when something fills the complete line, or something along those lines.

(I'm on hardy, real HW vs virtualisation does not have anything to do with it)