Gracefully handle focus prior to detecting the editor has become visible

src/text-editor-component.js

@@ -676,6 +676,12 @@ class TextEditorComponent {
     // against that case.
     if (!this.attached) this.didAttach()
 
+    // The element can be focused before the intersection observer detects that
+    // it has been shown for the first time. If this element is being focused,
+    // it is necessarily visible, so we call `didShow` to ensure the hidden
+    // input is rendered before we try to shift focus to it.
+    if (!this.visible) this.didShow()
+
     if (!this.focused) {
       this.focused = true
       this.scheduleUpdate()