diff --git a/packages/client/internals/Play.vue b/packages/client/internals/Play.vue
index e6bbdde2a4..48e05d905e 100644
--- a/packages/client/internals/Play.vue
+++ b/packages/client/internals/Play.vue
@@ -12,6 +12,9 @@ registerShotcuts()
 
 const root = ref<HTMLDivElement>()
 function onClick(e: MouseEvent) {
+  if (showEditor.value)
+    return
+
   if ((e.target as HTMLElement)?.id === 'slide-container') {
     // click right to next, left to previouse
     if ((e.screenX / window.innerWidth) > 0.6)
diff --git a/packages/parser/src/core.ts b/packages/parser/src/core.ts
index 34e0ae5592..87ed450b67 100644
--- a/packages/parser/src/core.ts
+++ b/packages/parser/src/core.ts
@@ -16,7 +16,7 @@ export function filterDisabled(data: SlidevMarkdown) {
   return data
 }
 
-function stringifySlide(data: SlideInfo, idx = 1) {
+export function stringifySlide(data: SlideInfo, idx = 1) {
   if (!data.raw)
     prettifySlide(data)
 
@@ -25,7 +25,7 @@ function stringifySlide(data: SlideInfo, idx = 1) {
     : `---\n${data.raw.startsWith('\n') ? data.raw : `\n${data.raw}`}`
 }
 
-function prettifySlide(data: SlideInfo) {
+export function prettifySlide(data: SlideInfo) {
   data.content = `\n${data.content.trim()}\n`
   data.raw = Object.keys(data.frontmatter || {}).length
     ? `---\n${YAML.dump(data.frontmatter).trim()}\n---\n${data.content}`
diff --git a/packages/slidev/node/plugins/loaders.ts b/packages/slidev/node/plugins/loaders.ts
index 4488c8c8d0..ee0c95f966 100644
--- a/packages/slidev/node/plugins/loaders.ts
+++ b/packages/slidev/node/plugins/loaders.ts
@@ -90,10 +90,7 @@ export function createSlidesLoader({ data, entry, clientRoot, themeRoots, userRo
             const body = await getBodyJson(req)
             Object.assign(data.slides[idx], body)
 
-            hmrNextModuleIds.push(`${slidePrefix}${idx}.md`)
-
-            if (body.content != null)
-              hmrNextModuleIds.push(`${slidePrefix}${idx}.md`)
+            hmrNextModuleIds.push(`${slidePrefix}${idx + 1}.md`)
 
             server.ws.send({
               type: 'custom',
diff --git a/packages/slidev/node/plugins/preset.ts b/packages/slidev/node/plugins/preset.ts
index aa10d3e51b..4c58a3b621 100644
--- a/packages/slidev/node/plugins/preset.ts
+++ b/packages/slidev/node/plugins/preset.ts
@@ -30,6 +30,8 @@ const customElements = new Set([
   'mspace',
   'mtable',
   'mtd',
+  'msup',
+  'msqrt',
   'mtr',
   'semantics',
 ])