diff --git a/packages/vscode/src/composables/useFocusedSlideNo.ts b/packages/vscode/src/composables/useFocusedSlideNo.ts
index e61c4fe035..5071404850 100644
--- a/packages/vscode/src/composables/useFocusedSlideNo.ts
+++ b/packages/vscode/src/composables/useFocusedSlideNo.ts
@@ -1,4 +1,4 @@
-import { createSingletonComposable, ref, useActiveTextEditor, useTextEditorSelection, watchEffect } from 'reactive-vscode'
+import { createSingletonComposable, ref, useActiveTextEditor, useTextEditorSelection, watch } from 'reactive-vscode'
 import { TextEditorSelectionChangeKind } from 'vscode'
 import { activeSlidevData } from '../projects'
 import { getFirstDisplayedChild } from '../utils/getFirstDisplayedChild'
@@ -10,12 +10,11 @@ export const useFocusedSlideNo = createSingletonComposable(() => {
 
   const slideNo = ref(1)
 
-  watchEffect(() => {
-    const data = activeSlidevData.value
-    const projectInfo = getProjectFromDoc(editor.value?.document)
-    if (!data || !projectInfo || !editor.value)
+  watch([activeSlidevData, editor, selection], ([data, editor, selection]) => {
+    const projectInfo = getProjectFromDoc(editor?.document)
+    if (!data || !projectInfo || !editor)
       return
-    const line = selection.value.active.line + 1
+    const line = selection.active.line + 1
     const slide = projectInfo.md.slides.find(s => s.start <= line && line <= s.end)
     if (slide) {
       const source = getFirstDisplayedChild(slide)
diff --git a/packages/vscode/src/views/slidesTree.ts b/packages/vscode/src/views/slidesTree.ts
index b846678941..e11f5f8de2 100644
--- a/packages/vscode/src/views/slidesTree.ts
+++ b/packages/vscode/src/views/slidesTree.ts
@@ -132,16 +132,16 @@ export const useSlidesTree = createSingletonComposable(() => {
   const visible = useViewVisibility(treeView)
   const { previewNavState } = usePreviewWebview()
   watch(
-    () => [visible.value, previewNavState.no, activeSlidevData.value, slidesTreeData.value] as const,
-    ([visible, no, data, tree]) => {
-      if (!visible)
+    () => previewNavState.no,
+    (no) => {
+      if (!visible.value)
         return
-      const slide = data?.slides[no - 1]
+      const slide = activeSlidevData.value?.slides[no - 1]
       if (!slide || !previewSync.value)
         return
       const path = (slide.importChain ?? []).concat(slide.source)
       const source = path.shift()
-      let node = tree?.find(e => e.slide === source)
+      let node = slidesTreeData.value?.find(e => e.slide === source)
       while (true) {
         const source = path.shift()
         if (!source) {