Version 1.9.0 Xfce 4.16 Repro steps: 1. Add plugin to panel - default note opens 1. Ctrl+W to delete, note disappears 1. A new default note may or may not open. If it does, repeat step 2 several times. 1. After a few times, eventually new default note won't appear. Plugin is now frozen and needs to be removed and readded.