The animation of the player using a riptide trident while flying with an elytra in the rain is glitchy and broken. The trident will also get stuck sometimes. The player will suddenly be completely unable to use the riptide trident. I tried to resolve this by taking the elytra off, dropping the trident, moving it around my inventory, using other items, noting works. Additionally, there are issues with the riptide trident freezing when flying through a snowy biome while it's snowing. This may be connected to the other trident issues. 

This is roughly my 6th major bug report over the past few days.