There was a problem with the cursor positioning for 16x4 displays in earlier versions of the regular (parallel interface) LiquidCrystal library for years but I believe this has been corrected in later versions.
If your particular LiquidCrystal_I2C library (there are many of them) was derived from one of those earlier libraries then it will have the same problem.
I suggest that you look into using the HD44780 library instead of the one you are using now.
Don