diff --git a/src/plugins/sync-plugin.js b/src/plugins/sync-plugin.js
index 49c1b38..b38f419 100644
--- a/src/plugins/sync-plugin.js
+++ b/src/plugins/sync-plugin.js
@@ -280,7 +280,7 @@ export class ProsemirrorBinding {
         }).filter(n => n !== null)
         const tr = this.prosemirrorView.state.tr.replace(0, this.prosemirrorView.state.doc.content.size, new PModel.Slice(new PModel.Fragment(fragmentContent), 0, 0))
         this.prosemirrorView.dispatch(tr)
-      })
+      }, ySyncPluginKey)
     })
   }
   /**
@@ -318,7 +318,7 @@ export class ProsemirrorBinding {
       this.doc.transact(() => {
         updateYFragment(this.doc, this.type, doc, this.mapping)
         this.beforeTransactionSelection = getRelativeSelection(this, this.prosemirrorView.state)
-      })
+      }, ySyncPluginKey)
     })
   }
   destroy () {
@@ -398,7 +398,7 @@ export const createNodeFromYElement = (el, schema, mapping, snapshot, prevSnapsh
     // an error occured while creating the node. This is probably a result of a concurrent action.
     /** @type {Y.Doc} */ (el.doc).transact(transaction => {
       /** @type {Y.Item} */ (el._item).delete(transaction)
-    })
+    }, ySyncPluginKey)
     mapping.delete(el)
     return null
   }
@@ -430,7 +430,7 @@ export const createTextNodesFromYText = (text, schema, mapping, snapshot, prevSn
     // an error occured while creating the node. This is probably a result of a concurrent action.
     /** @type {Y.Doc} */ (text.doc).transact(transaction => {
       /** @type {Y.Item} */ (text._item).delete(transaction)
-    })
+    }, ySyncPluginKey)
     return null
   }
   // @ts-ignore
@@ -756,7 +756,7 @@ const updateYFragment = (y, yDomFragment, pNode, mapping) => {
       }
       yDomFragment.insert(left, ins)
     }
-  })
+  }, ySyncPluginKey)
 }
 
 /**
diff --git a/src/plugins/undo-plugin.js b/src/plugins/undo-plugin.js
index 0ce665a..ccba645 100644
--- a/src/plugins/undo-plugin.js
+++ b/src/plugins/undo-plugin.js
@@ -29,7 +29,7 @@ export const yUndoPlugin = ({ protectedNodes = new Set(['paragraph']), trackedOr
       // TODO: check if plugin order matches and fix
       const ystate = ySyncPluginKey.getState(state)
       const undoManager = new UndoManager(ystate.type, {
-        trackedOrigins: new Set([null, ySyncPluginKey].concat(trackedOrigins)),
+        trackedOrigins: new Set([ySyncPluginKey].concat(trackedOrigins)),
         deleteFilter: item => !(item instanceof Item) ||
                               !(item.content instanceof ContentType) ||
                               !(item.content.type instanceof Text ||