Frost Walker does not work on transparent blocks.
New video (YouTube):
https://www.youtube.com/watch?v=GB7SrJcVQ-M
Block Type:
Glass (Contain stained)
Beacon
Chest
Trapped Chest
Lily Pad
Cactus
Anvil
End Portal (Not embedded)
Enchantment Table
Iron Bars
Glass Pane (Contain stained)
Fence (All)
Chorus Plant (Contain Flower)
Hopper
Trapdoor (All)
Piston (Contain Sticky)
Daylight Sensor
Door (All)
Fence Gate (All)
Stairs (All)
Slab (All ; Half)
Cobblestone Wall (Contain Mossy)
Cauldron
Brewing Stand
Farmland
Grass Path
End Rod
Snow Layer
Ladder
Vines
Not sure what blocks you expect it to work on. It temporarily turns water into ice. Can you elaborate on this report?