Ok, after I restarted the machine (although not Terminal) the strange behaviour seems to have disappeared although it does come and go. But I will give you the information you asked for as it may help you to figure it out.
I scroll with the Up/Down keys, I have not tried any other way but will do next time and report back. I have been using Ubuntu and GNOME for a very long time now and I have never seen anything like this on any other version other than GNOME3 Staging. I will attempt to get a VM running Wily Beta up and running and see if I can reproduce the bug there. Yes, I am able to reproduce this bug when not maximized, when maximized, and also when manually resizing the Terminal window. $LESS has no value. "stty size" reports "37 150". No, I don't have any additional layer of software running when this issue occurs. Yes, I am absolutely sure that it is gnome-terminal. The output of "echo $VTE_VERSION" is: "4002". I hope that this helps and I will run the same checks again when the issue returns and let you know if they are the same as I have reported here. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to less in Ubuntu. https://bugs.launchpad.net/bugs/1500228 Title: When scrolling back up some of the bottom comes up as a sort of sleeve Status in gnome-terminal package in Ubuntu: New Status in less package in Ubuntu: New Bug description: I have recently noticed that when viewing a manpage in gnome-terminal that if scrolling down, when I scroll back up again some of the bottom part of the page comes up too sort of like a sleeve. I have attached some example screenshots, so I ran 'man dpkg' and this is what it looked like initially dpkg_man_top1.png, but when I scrolled down to the bottom of the page and then back up again to the top, the top looked somewhat different as you can see: dpkg_man_top2.png. Now, it wouldn't matter where I had scrolled down to, nor where I had gone up to, the effect witnessed would have been the same. --- OS Information: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.04 Release: 15.04 Codename: vivid Flavour: GNOME GNOME Version: 3.16 Package Information: manpages: Installed: 3.74-1ubuntu1 Candidate: 3.74-1ubuntu1 Version table: *** 3.74-1ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status less: Installed: 458-3 Candidate: 458-3 Version table: *** 458-3 0 500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status gnome-terminal: Installed: 3.16.2-1ubuntu1~vivid1 Candidate: 3.16.2-1ubuntu1~vivid1 Version table: *** 3.16.2-1ubuntu1~vivid1 0 500 http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status 3.14.2-0ubuntu3 0 500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 3.12.3-0ubuntu1~utopic2 0 500 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/ vivid/main amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1500228/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp