26.04 does not works highlight and paste

Upgrading from 24.04 no more works highlight text and paste

You need to explain a bit more please.

Highlight what? What is the app?

Paste into what app? How are you pasting?

Hi, in Linux desktop, in every distribution, DE WM I can highlight text in every application and paste it with the mouse central wheel/button in another application

This sounds like a x11 vs wayland difference.

labwc needs a helper such as

wl-paste --primary --watch wl-copy &

Then need a labwc context change

You would need to experiment with variations of those above to enable your workflow.

Note… I use budgie-clipboard-applet as my helper for persistent clipboard management.

You mean adding

<mouse>
  <context name="Desktop">
    <mousebind button="Middle" action="Press">
      <action name="Execute" command="wl-paste --primary"/>
    </mousebind>
  </context>
</mouse>

to the ~/.config/budgie-desktop/labwc/rc.xml ?