diff -up firefox-105.0.1/widget/gtk/nsWindow.cpp.old firefox-105.0.1/widget/gtk/nsWindow.cpp
--- firefox-105.0.1/widget/gtk/nsWindow.cpp.old	2022-09-30 10:23:00.424784507 +0200
+++ firefox-105.0.1/widget/gtk/nsWindow.cpp	2022-09-30 10:24:36.345005046 +0200
@@ -1949,26 +1949,6 @@ void nsWindow::NativeMoveResizeWaylandPo
   bool needsPositionUpdate = newBounds.TopLeft() != mBounds.TopLeft();
   bool needsSizeUpdate = newBounds.Size() != mLastSizeRequest;
 
-  if (needsPositionUpdate) {
-    // See Bug 1735095
-    // Font scale causes rounding errors which we can't handle by move-to-rect.
-    // The font scale should not be used, but let's handle it somehow to
-    // avoid endless move calls.
-    if (StaticPrefs::layout_css_devPixelsPerPx() > 0 ||
-        gfxPlatformGtk::GetFontScaleFactor() != 1) {
-      bool roundingError = (abs(newBounds.x - mBounds.x) < 2 &&
-                            abs(newBounds.y - mBounds.y) < 2);
-      if (roundingError) {
-        // Keep the window where it is.
-        GdkPoint topLeft = DevicePixelsToGdkPointRoundDown(mBounds.TopLeft());
-        LOG("  apply rounding error workaround, move to %d, %d", topLeft.x,
-            topLeft.y);
-        gtk_window_move(GTK_WINDOW(mShell), topLeft.x, topLeft.y);
-        needsPositionUpdate = false;
-      }
-    }
-  }
-
   if (needsSizeUpdate) {
     // Wayland compositor changed popup size request from layout.
     // Set the constraints to use them in nsMenuPopupFrame::SetPopupPosition().