Can't copy anymore in note

Things i have tried:

can t copy from any source (different browsers, word, note in obsidian itself)
can t copy either with right click or with shortcut keys
restarted pc
re installed obsidian

Nothing helps…

What I’m trying to do

Encounter the same situation,

Now use keyboard shortcuts

Please paste the results from the command, “Show debug info”.

SYSTEM INFO:
Obsidian version: v0.15.8
Installer version: v0.15.8
Operating system: Windows 10 Pro 10.0.18362
Login status: not logged in
Insider build toggle: off
Live preview: on
Legacy editor: off
Base theme: light
Community theme: none
Snippets enabled: 0
Restricted mode: on

RECOMMENDATIONS:
none

thank you for your suggestion!
i tried but it didn’t work.