[BUG] "Paste" button appearing when LEFT CLICK #87

Still happening the same issue with "dom.event.clipboardevents.enable" switched to "false"

this is my compose yaml:

services:
  chromium_cont:
    #image: lscr.io/linuxserver/chromium:latest
    image: lscr.io/linuxserver/chromium:kasm
    #This is just how firefox decided to implement the seemless clipboard API, to disable this in about:config set dom.event.clipboardevents.enabled to false.
    container_name: chromium_secure_cont
    restart: unless-stopped
    environment:
      - PUID=1000
      - PGID=100
      - TZ=Europe/Madrid
      - CUSTOM_USER=administrador
      - PASSWORD=Eroski02
      - LC_ALL=es_ES.UTF-8

      # ── Drivers/VAAPI/Mesa ────────────────────────────────────────
      - DOCKER_MODS=linuxserver/mods:universal-package-install
      - INSTALL_PACKAGES=libgl1-mesa-dri|mesa-va-drivers|libegl1|vainfo|intel-media-va-driver-non-free|i965-va-driver|intel-gpu-tools
      - DRINODE=/dev/dri/renderD128
      - LIBVA_DRIVER_NAME=iHD
      - HW3D=true
      - KASM_EGL_DEVICE=/dev/dri/renderD128
      - XDG_RUNTIME_DIR=/run/user/1000

      # ── Flags Chromium para VAAPI en contenedor ───────────────────
      #- CHROME_CLI=--no-sandbox --use-gl=egl --ozone-platform=x11 --ignore-gpu-blocklist --enable-gpu-rasterization --enable-zero-copy --enable-features=VaapiVideoDecoder,VaapiVideoEncoder,CanvasOopRasterization --disable-features=UseChromeOSDirectVideoDecoder,Vulkan
      - KASM_AUDIO_OUTPUT=1
      - KASM_AUDIO_INPUT=1
    devices:
      - /dev/dri/card0:/dev/dri/card0
      - /dev/dri/renderD128:/dev/dri/renderD128
    group_add:
      - "44"   # video
    volumes:
      - chromium-cont_secure_config:/config
      - chromium-cont_secure_downloads:/downloads
      # (opcionales) bloqueos de shell
      - /share/Public/noshell:/usr/bin/xterm:ro
      - /share/Public/noshell:/usr/bin/sudo:ro
      - /share/Downloads:/config/Downloads
      - /share/Downloads:/config/Desktop
    ports:
      - "9898:3001"              # o "8090:3001" si prefieres 8090
    security_opt:
      - seccomp:unconfined
    shm_size: "1gb"
    tmpfs:
      - /run/user/1000:size=32m,mode=700

volumes:
  chromium-cont_secure_config:
  chromium-cont_secure_downloads:

btw, if i set "clipboardevents" to "false", i cant copy anything from browser to outside the browser

Originally posted by @ghiki in #83