Certain blocks remove water when placed in it, even if "waterloggable"

The bug

Certain blocks will automatically gain the "waterlogged" tag when placed inside a block of water. However, some will not, even if they are capable of having water placed in them later on by a bucket.

Affected blocks

List possibly incomplete

• Iron Bars
• Glass Panes
• Stained Glass Panes
• Cobblestone Walls
• Mossy Cobblestone Walls