These 2 mods for 1.14 have leaves that don't seem to have default support.

• For Biomes O' Plenty, only the Flowering Oak Leaves need support, the other leaves work fine.
• For The Gaia Dimension, the Burning Leaves has an animated texture, so the extra leaves have a squished texture instead of an animated one.

• Enhanced Vanilla is another mod that doesn't have default support for any of its leaves or logs.
• WildNature is also missing support for it's grass blocks and Overgrown Stone for tall grass
• Blue Skies is missing default support for it's leaves.