https://bugs.kde.org/show_bug.cgi?id=474697

            Bug ID: 474697
           Summary: All panels disappear and reappear on external display
                    connect: improve by first checking if these panels
                    change at all
    Classification: Plasma
           Product: plasmashell
           Version: 5.27.7
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: Panel
          Assignee: plasma-b...@kde.org
          Reporter: amanita+kdeb...@mailbox.org
                CC: niccolo.venera...@gmail.com
  Target Milestone: 1.0

This is a graphical bad behavior I think.

1. have all panels loaded and be there
2. connect a second display that itself has a different panel

What happens:
ALL panels reload, even those on the main display that stay the same

What should happen:
No blinking. First check if the panels actually change their position, and if
not dont reload them. If they change, do the blinking disappear-reload thing.

I am not sure if this is how panels and displays work on Wayland, as a big
display and everything changes. But panels that stay the same should never
reload, at least under default settings where the main display stays the main
one, like on a Laptop.

--- Software ---
OS: Fedora Linux 38.20230915.0 (Kinoite)
KDE Plasma: 5.27.7
KDE Frameworks: 5.109.0
Qt: 5.15.10
Kernel: 6.4.15-200.fc38.x86_64
Compositor: wayland

--- Hardware ---
CPU: AMD Ryzen 5 PRO 3500U w/ Radeon Vega Mobile Gfx
RAM: 21.4 GB
GPU: AMD Radeon Vega 8 Graphics
Video memory: 2048MB
Audio: Pipewire

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