--- unpatched/chromium.launcher	2020-08-28 18:49:25.000000000 +0200
+++ chromium.launcher	2020-09-04 12:59:57.227077188 +0200
@@ -97,20 +97,31 @@
 fi
 
 WANT_TEMP_PROFILE=0
+HEADLESS_USED=0
 for arg in "$@"; do
   shift
   if [ "$arg" = "--temp-profile" ]; then
     WANT_TEMP_PROFILE=1
     continue
+  elif [ "$arg" = "--headless" ]; then
+    HEADLESS_USED=1
   fi
   set -- "$@" "$arg"
 done
 
 if [ $WANT_TEMP_PROFILE -eq 0 ] ; then
-  exec "$SNAP/usr/lib/chromium-browser/chrome" --no-default-browser-check --no-first-run --password-store=$PASSWORD_STORE $FLASH_OPTIONS $CHROMIUM_FLAGS "$@" "$FIRSTRUN_PAGE"
+  if [ $HEADLESS_USED -eq 0 ] ; then
+    exec "$SNAP/usr/lib/chromium-browser/chrome" --no-default-browser-check --no-first-run --password-store=$PASSWORD_STORE $FLASH_OPTIONS $CHROMIUM_FLAGS "$@" "$FIRSTRUN_PAGE"
+  else
+    exec "$SNAP/usr/lib/chromium-browser/chrome" --no-default-browser-check --no-first-run --password-store=$PASSWORD_STORE $FLASH_OPTIONS $CHROMIUM_FLAGS "$@"
+  fi
 else
   TEMP_PROFILE=$(mktemp -d)
   trap "rm -rf $TEMP_PROFILE" EXIT
   # we can't exec here as we need to clean-up the temporary profile
-  "$SNAP/usr/lib/chromium-browser/chrome" --user-data-dir=$TEMP_PROFILE --no-default-browser-check --no-first-run --password-store=$PASSWORD_STORE $FLASH_OPTIONS $CHROMIUM_FLAGS "$@" "$FIRSTRUN_PAGE"
+  if [ $HEADLESS_USED -eq 0 ] ; then
+    "$SNAP/usr/lib/chromium-browser/chrome" --user-data-dir=$TEMP_PROFILE --no-default-browser-check --no-first-run --password-store=$PASSWORD_STORE $FLASH_OPTIONS $CHROMIUM_FLAGS "$@" "$FIRSTRUN_PAGE"
+  else
+    "$SNAP/usr/lib/chromium-browser/chrome" --user-data-dir=$TEMP_PROFILE --no-default-browser-check --no-first-run --password-store=$PASSWORD_STORE $FLASH_OPTIONS $CHROMIUM_FLAGS "$@"
+  fi
 fi