Comment 2 for bug 1726262

I've tried multiple desktop environments (GNOME on Wayland / Xorg, Ubuntu on Wayland / Xorg, Unity 7 [Xorg only]), but couldn't reproduce your problem with a new user. However, I've seen screenshots similar to this IIRC in Red Hat's or SUSE's bugzilla.

Which desktop environment do you use? (The window decoration of gnome-terminal suggests "Ubuntu", although buttons aren't on the right.) Also, Wayland on Xorg? Can you try the other options and see if the bug is still present?

Did you migrate your user settings (e.g. keep your home directory) during the fresh install of 17.10, or is it a newly created user? Could you please create a brand new user and check the behavior?

By Chrome (Browser) do you mean chromium-browser as shipped by Ubuntu?

What's that slightly pink-ish rectangle at the bottom left of the screenshot? Is that another window? Is it only a mere coincidence that its bottom aligns with the shadow artifact in the terminal, or does that window peek through gnome-terminal?

Do you have transparency enabled in gnome-terminal (Profile preferences -> Colors)? If so, does disabling that help?

Does the problem also occur with other gnome-terminal color schemes (e.g. enable "Use colors from system theme")?

Thanks!