Second this. I also experience this and I thought it was a bug as well. This really bothers me because the creation time (and modification time to a lesser extent) is valuable information for me. They provide contextual information of what I was going through and what level of knowledge I was at when creating the note.
Maybe not many people value them as the same as I don but I think usages like using Dataview to show “notes created today” queries in daily notes (as mentioned by OP) can be useful for some people. Sync unfortunately messes this up by not preserving the creation date of files.