Sometimes, when i load up my world normally (without changing versions) i get chunk glitches. one sadly wiped out my sugar cane farm, but that was okay. The thing is, it happened when i loaded up 1.14.2 when i had before on that same world. This confuses me.
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Sorry, I mean chunk glitches where it copies chunks from somewhere and puts them in a random place. It might also just restore a chunk to its original state, removing built stuff.
Ah, thanks. We already have another ticket about that: MC-150202. If you want to add any further information as a comment to that ticket, that would be appreciated.

But I get these when loading on the same update, so its not like a bigger doesn't exist anymore, its just random

Bug*
What kind of "chunk glitches"?