A list of lower priority known issues with current versions:

• Crying Obsidian blocks no longer emit particles.
• Mycelium shapes do not emit particles.
• Certain obsidian-type blocks are moveable by pistons (Also affects crying variants):
• obsidian_slab, obsidian_stairs, obsidian_wall, and obsidian_gate
• obsidian_pillar
• obsidian_corner_pillar
• carved_obsidian
• chiseled_obsidian
• Certain netherrack blocks use the incorrect sound groups:
• netherrack_slab, netherack_stairs, netherrack_wall, and netherrack_gate use the nether_bricks sound.
• cobbled_netherrack, cobbled_netherrack_slab, cobbled_netherrack_stairs, cobbled_netherrack_wall, and cobbled_netherrack_gate use the nether_bricks sound.
• smooth_netherrack uses the nether_bricks sound
• netherrack_pillar, netherrack_corner_pillar, and chiseled_netherrack use the netherrack sound.
• Certain Warped/Crimson wart blocks use the incorrect sound group:
• crimson_wart_slab, crimson_wart_stairs, crimson_wart_wall, and crimson_wart_gate use the nether_bricks sound.
• smooth_crimson_wart uses the nether_bricks sound
• warped_wart_slab, warped_wart_stairs, warped_wart_wall, and warped_wart_gate use the nether_bricks sound
• smooth_warped_wart uses the nether_bricks sound
• Warped and Crimson wart sets both use the wrong colors on maps.
• Some ice blocks do not cull themselves properly
• ice_pillar
• any non-full block ice variant