1 files changed, 5 insertions, 0 deletions

diff --git a/language-web/src/main/js/xtext/UpdateService.ts b/language-web/src/main/js/xtext/UpdateService.ts
index f8ab7438..bbe7bb62 100644
--- a/language-web/src/main/js/xtext/UpdateService.ts
+++ b/language-web/src/main/js/xtext/UpdateService.ts
@@ -53,6 +53,11 @@ export class UpdateService {
     this.webSocketClient = webSocketClient;
   }
 
+  onConnect(): Promise<void> {
+    this.xtextStateId = null;
+    return this.updateFullText();
+  }
+
   onTransaction(transaction: Transaction): void {
     const { changes } = transaction;
     if (!changes.empty) {