diff --git a/www/common/onlyoffice/inner.js b/www/common/onlyoffice/inner.js
index 9ffadea3c..95d5b872e 100644
--- a/www/common/onlyoffice/inner.js
+++ b/www/common/onlyoffice/inner.js
@@ -213,6 +213,19 @@ define([
             }
         };
 
+        // Make sure a former tab on the same worker doesn't have remaining locks
+        var checkClients = function (clients) {
+            Object.keys(content.ids).forEach(function (id) {
+                var tabId = Number(id.slice(33)); // remove the netflux ID and the "-"
+                if (clients.indexOf(tabId) === -1) {
+                    removeClient({
+                        id: tabId
+                    });
+                }
+            });
+        };
+
+
         var getFileType = function () {
             var type = common.getMetadataMgr().getPrivateData().ooType;
             var title = common.getMetadataMgr().getMetadataLazy().title;
@@ -728,6 +741,7 @@ define([
             sframeChan.on('EV_OO_EVENT', function (obj) {
                 switch (obj.ev) {
                     case 'READY':
+                        checkClients(obj.data);
                         cb();
                         break;
                     case 'LEAVE':
@@ -1357,6 +1371,7 @@ define([
                             } catch (e) {}
                         } else {
                             setEditable(true);
+                            handleNewLocks({}, content.locks);
                             if (APP.unsavedChanges) {
                                 var unsaved = APP.unsavedChanges;
                                 delete APP.unsavedChanges;
diff --git a/www/common/outer/onlyoffice.js b/www/common/outer/onlyoffice.js
index 773774c5a..b5c3e7ba1 100644
--- a/www/common/outer/onlyoffice.js
+++ b/www/common/outer/onlyoffice.js
@@ -40,7 +40,7 @@ define([
             if (!c.id) { c.id = chan.wc.myID + '-' + client; }
 
             getHistory(ctx, client, function () {
-                ctx.emit('READY', '', [client]);
+                ctx.emit('READY', chan.clients, [client]);
             });
 
             // ==> And push the new tab to the list
@@ -149,7 +149,7 @@ define([
             }
             // End of history: emit READY
             if (parsed.state && parsed.state === 1 && parsed.channel) {
-                ctx.emit('READY', '', chan.clients);
+                ctx.emit('READY', chan.clients, chan.clients);
                 return;
             }
             if (parsed.error && parsed.channel) { return; }