In the data pack that I am making, I attempted to create custom tags for the Sand and Red Sand entitled "sand", to simplify my new crafting recipe for Soul Sand, and when I used /reload, the new recipe with the tag didn't load, and when I exited and reloaded the game, the tag crashed my game. It also occurred the same with my tags for all of the corals (coral, coral block, dead coral block, coral fan, and dead coral fan). It has been happening since the 1.13 full release.