this bug is fixed in preview
using the script bellow to test i found out that playerPlaceBlock event don't trigger when placing some blocks::
script:

world.afterEvents.playerPlaceBlock.subscribe((event) => {    event.player.sendMessage("afterEvents")});
world.beforeEvents.playerPlaceBlock.subscribe((event) => {    event.player.sendMessage("beforeEvents")}); 

blocks that don't trigger beforeEvents.playerPlaceBlock:

• beds
• Kelp
• Sugar Canes
• Nether Wart
• Flower Pots
• planting seeds
• Item Frames
• Glow Item Frames
• Signs
• Hanging Signs
• Redstone Repeaters
• Redstone Comparator
• Chains
• banners
• Campfires
• Soul Campfires
• Brewing Stands
• Cauldron
• Hoppers
• Redstone Dust

blocks that don't trigger afterEvents.playerPlaceBlock:

• Lily Pad
• Candle
• joining tow slabs together
• Sea Pickles
• Frogspawn
• Cocoa Beans

blocks that don't trigger playerPlaceBlock:

• Skulls and all heads
• paintings (they are entity so nvm them xd)