--- a/eric7/E5Gui/E5ToolBarManager.py	Mon May 17 19:58:15 2021 +0200
+++ b/eric7/E5Gui/E5ToolBarManager.py	Tue May 18 18:19:47 2021 +0200
@@ -539,7 +539,9 @@
         if state.isEmpty():
             return False
         
-        data = QByteArray(state)
+        # FIXME: this copies only up to the first \0 character
+##        data = QByteArray(state)
+        data = state
         stream = QDataStream(data, QIODevice.OpenModeFlag.ReadOnly)
         stream.setVersion(QDataStream.Version.Qt_4_6)
         marker = stream.readUInt16()