Dismissing notifications in the notification window changes position of do-not-disturb button

When new notifications appear in the notification window of Ubuntu 20.04 it is possible to dismiss them by clicking the 'clear all' button or by dismissing individual notifications. When messages are dismissed, it results in a (downward) change in position of the 'do not disturb' toggle button. The expected behavior would be that the position of the button is not affected by addition/removal of notifications. Reporting in gnome shell, but it is also possible this is a theme styling issue.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.3-1ubuntu1~20.04.2
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 16 14:06:17 2020
DisplayManager: gdm3
InstallationDate: Installed on 2020-07-06 (10 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: mutter-common 3.36.3-0ubuntu0.20.04.1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)