Game Crashes and Boats Disappear when Re-entering World

I have started playing my survival world with some of my favorite add-ons and shaders I have on my Xbox One. I started finding a Jungle Temple. I went inside and when I flicked one of the levers, the game tries to autosave, but the game also has crashed for no reason. So, I reloaded the game and turned off the shaders that caused the game to crash, but when the world loaded back in, I was instead back to the island in front of the jungle temple and I realized that my boat has disappeared, and I was forced to make a new one. Is there a reason why this bug happened to me, or is it happening to you? Thanks, and I am sorry for what I have to say about that. I also hope to see some of your problems.