should remove highlights if selection change is detected before debounce

Author: smitbarmase

crates/editor/src/editor.rs

@@ -4782,6 +4782,15 @@ impl Editor {
             self.clear_background_highlights::<SelectedTextHighlight>(cx);
             return;
         }
+        if self.selections.count() != 1 || self.selections.line_mode {
+            self.clear_background_highlights::<SelectedTextHighlight>(cx);
+            return;
+        }
+        let selection = self.selections.newest::<Point>(cx);
+        if selection.is_empty() || selection.start.row != selection.end.row {
+            self.clear_background_highlights::<SelectedTextHighlight>(cx);
+            return;
+        }
         let debounce = EditorSettings::get_global(cx).selection_highlight_debounce;
         self.selection_highlight_task = Some(cx.spawn_in(window, |editor, mut cx| async move {
             cx.background_executor()