Semitransparent entity textures don't seem to work

The title says it all- I've made an entity where part of the texture is semitransparent, and part of it is solid, but the game won't render the semitransparent parts as being semitransparent. They're just solid.

I remember semitransparent entity textures working in past versions of MCreator, so I have no clue if I did something wrong or not.

Any help is appreciated.