White vertical line on monitor edge when using 1.5x scaling

[MasterJubei]

Describe the bug

There is a white vertical line on the right edge of the monitor when using 1.5x scaling(At least on a 4k display, I do not believe this affects other resolutions). This only affects deepin-kwin, not deepin-wm

To Reproduce

1. Use 1.5x scaling(possibly only affects 4k monitors?)
2. There is a white vertical line on the right edge of the monitor.

Screenshots

I can't seem to screen capture with the snipping tool. Cell phone picture will do,

Enviroments:

Distro & Version

Affects both: Deepin 15.11 and Manjaro Deepin
I can confirm this is not a Manjaro Deepin only issue, I booted into 15.11 and it has the same problem. This issue I believe only affects 4k resolution(3840x2160)

Related package version

community/deepin-account-faces 1.0.11-1.1 (deepin) [installed]
community/deepin-anything 5.0.1-1 (deepin) [installed]
community/deepin-anything-dkms 5.0.1-1 [installed]
community/deepin-api 5.0.0-1 (deepin) [installed]
community/deepin-calculator 5.0.1-1 (deepin-extra) [installed]
community/deepin-calendar 5.0.1-1 (deepin) [installed]
community/deepin-clone 5.0.1-1 (deepin-extra) [installed]
community/deepin-clutter 1.26.2-2 [installed]
community/deepin-cogl 1.22.5-2 [installed]
community/deepin-control-center 5.0.0-1 (deepin) [installed]
community/deepin-daemon 5.0.0-1 (deepin) [installed]
community/deepin-desktop-base 2:2019.07.10-1 (deepin) [installed]
community/deepin-desktop-schemas-manjaro 3.13.9-1 (deepin-manjaro) [installed]
community/deepin-dock 5.0.0-1 (deepin) [installed]
community/deepin-draw 1.0.0-2 (deepin-extra) [installed]
community/deepin-editor 1.2.6.4-1 (deepin-extra) [installed]
community/deepin-file-manager 1:5.0.0-1 (deepin) [installed]
community/deepin-gtk-theme 17.10.11-1 (deepin) [installed]
community/deepin-icon-theme 15.12.71-1 [installed]
community/deepin-iconthemes-manjaro 20170918-1 (deepin-manjaro) [installed]
community/deepin-image-viewer 5.0.0-1 (deepin) [installed]
community/deepin-kwin 0.1.0-1 [installed]
community/deepin-launcher 5.0.0-1 (deepin) [installed]
community/deepin-menu 3.4.8-1 (deepin) [installed]
community/deepin-metacity 3.22.24-1 [installed]
community/deepin-movie 1:5.0.0-1 (deepin-extra) [installed]
community/deepin-music 5.0.1-1 (deepin-extra) [installed]
community/deepin-mutter 3.20.38-1 [installed]
community/deepin-network-utils 5.0.1-1 (deepin) [installed]
community/deepin-picker 5.0.1-1 (deepin-extra) [installed]
community/deepin-polkit-agent 5.0.0-1 [installed]
community/deepin-polkit-agent-ext-gnomekeyring 0.1.0-1 (deepin) [installed]
community/deepin-qt-dbus-factory 5.0.1-1 [installed]
community/deepin-qt5dxcb-plugin 5.0.1-1 (deepin) [installed]
community/deepin-qt5integration 5.0.0-1 (deepin) [installed]
community/deepin-screen-recorder 5.0.0-1 (deepin-extra) [installed]
community/deepin-screenshot 5.0.0-1 (deepin-extra) [installed]
community/deepin-session-ui 5.0.0-1 (deepin) [installed]
community/deepin-shortcut-viewer 5.0.0-1 (deepin) [installed]
community/deepin-sound-theme 15.10.3-1 (deepin) [installed]
community/deepin-system-monitor 5.0.0-1 (deepin) [installed]
community/deepin-terminal 5.0.0-1 (deepin-extra) [installed]
community/deepin-turbo 0.0.3-1 (deepin) [installed]
community/deepin-voice-recorder 5.0.0-1 (deepin-extra) [installed]
community/deepin-wallpapers 2:1.7.5-2 (deepin-manjaro) [installed]
community/deepin-wm 1.9.38-1 [installed]
community/dtkwidget 2.1.1-1 [installed]
community/dtkwm 2.0.12-1 [installed]
community/manjaro-deepin-settings 20181231-1 (deepin-manjaro) [installed]
community/startdde 5.0.1-1 (deepin) [installed]

[BLumia]

Please track this issue in #1352 (comment) :)