After reinstalling the vscode extension several times, and do not restarting it after installation, the whole extension sometimes gets frozen - once the user clicks it just refreshes the whole webview. 

Steps to reproduce:

• Open a folder with any swf diagram inside
• Uninstall any previous intalation of the plugin
• Close and reopen VsCode
• With a json/sw file opened install the VSIX from file and then try to click and select any state or click on an empty area of the canvas
• If not reproducible uninstall and then reinstall the same VSIX without closing and reopening the VsCode. Click on the button "Reload" of the Plugin. At some point the issue is reproducible. Multiple reinstallations may be necessary to reproduce the issue.