[TxMt] callback.document.will-save not working anymore

Since a recent update (maybe since [60180f7](https://link.nylas.com/link/33wd9n5m5l3cdcz4d1oikbwcz/local- 2f068e83-2834/0?redirect=https%3A%2F%2Fgithub.com%2Ftextmate%2Ftextmate%2Fcommit%2F60180f77ec16a4c058c8845ebb9eb41ab6ef227e&r=dGV4dG1hdGVAbGlzdHMubWFjcm9tYXRlcy5jb20=) ?) callback.document.will-save isn't working anymore when used as semantic class in a bundle.

Has this been changed?

Koen

Sent from [Nylas N1](https://link.nylas.com/link/33wd9n5m5l3cdcz4d1oikbwcz /local- 2f068e83-2834/1?redirect=https%3A%2F%2Fnylas.com%2Fn1%3Fref%3Dn1&r=dGV4dG1hdGVAbGlzdHMubWFjcm9tYXRlcy5jb20=), the extensible, open source mail client.