GUI on Part Cannot Be Seen Through Glass Window

[Danny73244 (Danny)]

When I place a GUI on a part, that GUI cannot be seen through a glass window
This problem occurs only for the glass material on the window, other materials work correctly.

[bnxDJ (bnx)]

This is one of the cons when using the glass material.
Can’t really do anything other than switch to plastic.

[zachary108181 (ToxicSnake48)]

Hey, Its been a bug for awhile now. Both decals and gui’s do not show up. I would recomend using a different meterial

heres some more info on this bug

Make glass work with transparent objects

As a Roblox developer, it is currently not feasible for me to use the glass material in my games, because the material does not work with other transparent parts. For example, if I place a part with 0.5 transparency in front of a glass part, the transparent part will be invisible. This so-called ‘bug-feature’ of the glass material affects particles, water, translucent parts, UI, and all sorts of visual effects and transparent objects in the engine. In some Roblox games, this may be just a mino…

[tnt_Dante (Green Bit)]

Like @bnxDJ said, you can switch to the plastic or smooth plastic material. Then you can make it transparent and change the color. You can also change the reflectance property to make it more glass like.