osd volume widget tremble while i am changing volume

[zvart]

OSD widget shifts from left to right while I am changing sound volume.
As i notice it start from "volume mark" #10 and tremble until "volume mark" #16
( i count like this mute = 0 fist apeare of volume mark is 1 last is 16)

1) Ubuntu 18.04.3 LTS
2) notify-osd: 0.9.35+16.04.20160415
3) While I am change sound volume I expect that notify vidget stays on the same stable position without moving from right to left
4) It is trembling

gif: https://media.giphy.com/media/Sx4XPuRmuXdiwdyxi6/giphy.gif
i came from: https://askubuntu.com/questions/1198748/how-to-make-osd-volume-widget-smoth-on-ubuntu-18-04?

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: notify-osd 0.9.35+16.04.20160415-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-72.81-generic 4.15.18
Uname: Linux 4.15.0-72-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Dec 27 09:54:01 2019
InstallationDate: Installed on 2018-04-02 (633 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
MachineType: Dell Inc. Latitude E7240
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic root=UUID=ba0bb126-a7be-49d8-a11a-23714020ff4e ro quiet splash vt.handoff=1
RelatedPackageVersions:
 xserver-xorg 1:7.7+19ubuntu7.1
 libgl1-mesa-glx 19.0.8-0ubuntu0~18.04.3
 libdrm2 2.4.97-1ubuntu1~18.04.1
 xserver-xorg-video-intel 2:2.99.917+git20171229-1
 xserver-xorg-video-ati 1:18.0.1-1
SourcePackage: notify-osd
UpgradeStatus: Upgraded to bionic on 2019-12-17 (9 days ago)
dmi.bios.date: 10/18/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A22
dmi.board.name: 0WDPYW
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA22:bd10/18/2017:svnDellInc.:pnLatitudeE7240:pvr00:rvnDellInc.:rn0WDPYW:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7240
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.

[zvart (zvart)]

I have realized that the reason of this tremble was resolution. Defalt was 16x9 (1920x1080) i ve change it to 16x9 (1600x900). On the default resolution it works smoth