I tried constructing a skylight from glass window panes. Instead of the expected large flat glass panel, the result was a 1x1 grid which rain (and even the player) could fall through without it smashing.
This could be WAI, if window panes are only supposed to be capable of being constructed in the xy and zy planes, not the xz plane. If so, I apologise for the time wasted.
[media][media]Attachments
Comments 5

Thank you for your report!
However, this issue is Invalid.
You have posted a feature request or a suggestion. This site is for bug reports only.
For suggestions, please visit Minecraft Suggestions on Reddit or visit the Feedback website.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
Thank you for your report!
However, this issue is Invalid.
You have posted a feature request or a suggestion. This site is for bug reports only.
For suggestions, please visit Minecraft Suggestions on Reddit or visit the Feedback website.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
Thank you, was uncertain whether this was a bug or not. Can be worked around easily by using glass blocks, and upon thought changing it would actually be game-breaking, so not worthy of a suggestion.