Can't add options to fields

Just upgraded to 2.2.4 and now the ability to add/remove options from radio/checkbox/select fields no longer works.

Here is a screenshot of what I see with the plugin enabled – https://screencast.com/t/iOMz3PEzf

All the buttons to manage the options are gone.

If I disable the plugin, everything appears as normal.

https://www.ads-software.com/extend/plugins/gravity-forms-salesforce/