I've tested this with latest 19.10 (updated today) using gnome-session and upstream dash-to-dock installed from gnome-software (can't remember the version now, but I installed it a few minutes ago). The problem is still there when the dock is vertically expanded to fit the screen. I've reported this upstream https://github.com/micheleg/dash-to- dock/issues/1007.
** Bug watch added: github.com/micheleg/dash-to-dock/issues #1007 https://github.com/micheleg/dash-to-dock/issues/1007 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell-extension-ubuntu-dock in Ubuntu. https://bugs.launchpad.net/bugs/1834967 Title: Activities overview doesn't shrink some windows adequately and they are partially off screen Status in gnome-shell package in Ubuntu: Confirmed Status in gnome-shell-extension-dashtodock package in Ubuntu: Confirmed Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: Confirmed Bug description: Details in my screenshot: https://photos.app.goo.gl/BR6H56eug7JFMGU37 ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-shell 3.32.2-2ubuntu1 ProcVersionSignature: Ubuntu 5.0.0-17.18-generic 5.0.8 Uname: Linux 5.0.0-17-generic x86_64 ApportVersion: 2.20.11-0ubuntu3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Jul 1 20:38:43 2019 DisplayManager: gdm3 InstallationDate: Installed on 2019-07-01 (0 days ago) InstallationMedia: ProcEnviron: LANGUAGE=ru_UA:ru PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=ru_UA.UTF-8 SHELL=/bin/bash RelatedPackageVersions: mutter-common 3.32.2+git20190626-1ubuntu1 SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1834967/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp