From b1da4cbc116cd76aaf676ce86c6133ef63e84227 Mon Sep 17 00:00:00 2001
From: Christina Toegl <toegl@tugraz.at>
Date: Wed, 10 Feb 2021 12:30:27 +0100
Subject: [PATCH] Undo fix

---
 packages/provider/src/adapter-lit-element.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/provider/src/adapter-lit-element.js b/packages/provider/src/adapter-lit-element.js
index 613b3db3..864cf99f 100644
--- a/packages/provider/src/adapter-lit-element.js
+++ b/packages/provider/src/adapter-lit-element.js
@@ -286,11 +286,11 @@ export class AdapterLitElement extends LitElement {
                 }
                 break;
             default:
-                // The function should not be called if newValue is empty but name is set
+                // The function should not be called if newValue is empty but name and oldValue are set
                 // This should prevent 'Uncaught SyntaxError: JSON.parse unexpected end of data at line 1 column 1 of the JSON data'
-                if (newValue || !name) {
+                if (newValue || !oldValue || !name) {
                     super.attributeChangedCallback(name, oldValue, newValue);
-                // } else { //!newValue && name
+                // } else {
                     //     console.log("attributeChangedCallback ignored", name, oldValue, newValue);
                 }
         }
-- 
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