Put the summary of the bug you're having here
What I expected to happen was...:
the water fill up a cube of glass pane like an aquarium
What actually happened was...:
the water stay in the middle
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...
C'est normal que ça fasse ça; l'eau ne peut pas entrer dans des demi-blocs comme les vitraux. Ce serait extrêmement compliquée d'introduire ça dans le jeu.
(This is normal behavior; water can't flow into half-blocks like glass panes. It would be extremely complicated to add this to the game.)