(assuming this is a bug and not intentional)
What were you doing before bug occurred: Testing the sand/glass interaction.
Steps to reproduce: Just follow the steps to produce glass shards with sand.
F9 Logs ( press f9 to view them in-game): none
So there is an issue with the sand/lightning interaction as of now. When you turn the sand into glass, it’s almost impossible to shatter the glass. Too little destruction does absolutely nothing (you have to break it in a single hit not multiple), and too much destruction causes it to disappear completely rather than shattering. Once shattered, the glass doesn’t do any damage or bleed, it just sits there and looks pretty. Shattering the shattered pieces even more also doesn’t change it.
In addition to this I also think that glass from shattered windows should deal damage but that’s besides the point.