Glass is rendering quite poorly inside Enscape currently.
Here's an example what I mean. The first image is rendered with Thea and shows proper refraction of light passing through glass.
Here's a render with Enscape. The rays refract as if the object was not solid but made out of thin glass instead. The problem is obviously rays refracting twice, once passing through front face material and than again when passing through back face. There are also no shadows nor reflections on the floor.
Here's the same render but with transparency turned off. You can clearly see reflections and shadows on the floor.
Here's the scene if you want to play with it: glass test 3.zip
Note: the scene crashes if you try to render it to 4k.