Why is it raining in my cabin with glass windows?

[Jojoya]

My cozy cabin has glass windows. . .there are no holes in the roof. . .why is it raining inside my cabin?

Glass is supposed to stop rain. . . right??

May want to take another look at the "roof" - there is a rather large, if decorative, hole that would explain the rain. Likely the mammets were too lazy to put any glass in it.