Fix popup replacement buttons rendering bug

online-editor.js

@@ -617,7 +617,6 @@ class BesPopupEl extends HTMLElement {
     this.style.position = 'fixed'
     this.style.left = `${x}px`
     this.style.top = `${y}px`
-    this.clear()
     this.classList.add('show')
   }
 
@@ -635,6 +634,7 @@ class BesPopupEl extends HTMLElement {
   }
 
   changeText(text) {
+    this.clear()
     this.shadowRoot.querySelector('.popup-text').textContent = text
   }