diff --git a/src/imwald/app.py b/src/imwald/app.py
index 5f9d129..62c49df 100644
--- a/src/imwald/app.py
+++ b/src/imwald/app.py
@@ -10,7 +10,7 @@ from PySide6.QtWidgets import QApplication
 
 from imwald.config import db_path
 from imwald.core.database import Database
-from imwald.core.display_constants import APP_DISPLAY_NAME
+from imwald.core.display_constants import APP_DISPLAY_NAME, APP_WM_ID
 from imwald.core.nostr_engine import NostrEngine
 from imwald.ui.asset_paths import favicon_png_path
 from imwald.ui.main_window import MainWindow
@@ -35,9 +35,10 @@ def _set_comfortable_default_font(app: QApplication) -> None:
 def main() -> None:
     logging.basicConfig(level=logging.INFO, format="%(levelname)s %(name)s: %(message)s")
     app = QApplication(sys.argv)
-    app.setApplicationName("imwald")
+    app.setApplicationName(APP_WM_ID)
     app.setApplicationDisplayName(APP_DISPLAY_NAME)
     app.setOrganizationName("imwald")
+    app.setDesktopFileName(APP_WM_ID)
     fav_pm = QPixmap(str(favicon_png_path()))
     if not fav_pm.isNull():
         app.setWindowIcon(QIcon(fav_pm))
diff --git a/src/imwald/core/display_constants.py b/src/imwald/core/display_constants.py
index 2302145..4fed0d9 100644
--- a/src/imwald/core/display_constants.py
+++ b/src/imwald/core/display_constants.py
@@ -2,4 +2,14 @@
 
 APP_DISPLAY_NAME = "Imwald Desktop"
 
+# Linux shell / compositor application identity (Wayland app_id, desktop entry basename,
+# WM_CLASS-related naming). Jumble (Electron) uses ``imwald-jumble`` (see that repo’s
+# ``electron/main.cjs`` + electron-builder linux config); keep this id different so desktops
+# do not merge both clients into one dock / overview group.
+APP_WM_ID = "imwald-desktop"
+
 IMAGE_DISPLAY_MAX_WIDTH_PX = 400
+
+# Extra space below primary feed content so bottom controls stay clear of OS dock
+# hover previews / taskbar overlays (common on GNOME when the window reaches the screen edge).
+WINDOW_CONTENT_BOTTOM_SAFE_INSET_PX = 28
diff --git a/src/imwald/ui/feed_page.py b/src/imwald/ui/feed_page.py
index c5c82b3..e7e2974 100644
--- a/src/imwald/ui/feed_page.py
+++ b/src/imwald/ui/feed_page.py
@@ -31,7 +31,10 @@ from imwald.core.author_html import (
     thread_reply_author_row_html,
 )
 from imwald.core.database import Database
-from imwald.core.display_constants import IMAGE_DISPLAY_MAX_WIDTH_PX
+from imwald.core.display_constants import (
+    IMAGE_DISPLAY_MAX_WIDTH_PX,
+    WINDOW_CONTENT_BOTTOM_SAFE_INSET_PX,
+)
 from imwald.core.kind0_profile import (
     collect_nip05_identifiers,
     kind0_json_object_prefix,
@@ -346,7 +349,12 @@ class FeedPage(QWidget):
         split.setSizes([780, 420])
 
         outer = QVBoxLayout(self)
-        outer.setContentsMargins(10, 8, 10, 8)
+        outer.setContentsMargins(
+            10,
+            8,
+            10,
+            8 + WINDOW_CONTENT_BOTTOM_SAFE_INSET_PX,
+        )
         outer.addWidget(split)
 
     def _on_feed_rich_anchor(self, url: QUrl) -> None: