There seems to be an issue when glass objects are reflected on other surfaces, and they lose all their translucency (actually refraction) properties.
See the difference between the frosted glass panel and its' reflection to the right in the attachment.
We' re using Enscape 4.2.0.1658 on SketchUp 2024 for Windows. Using ultra rendering quality.
The frosted glass on the render has the settings shown in the attachment, and the mirror is a generic material with 0 Roughness and 100 Metallic.
Can you add a little more context? Which quality settings are you using? Which Enscape version is installed? And are you on Windows or Mac?