minecraft:tp uses double coordinates (double d0 = Double.parseDouble(s)
https://github.com/Cat7373/server_diff/blob/master/net/minecraft/server/CommandAbstract.java#L118
essentials:tp uses int coordinates (Integer.parseInt(args[0].substring(1)))
https://hub.spigotmc.org/stash/projects/PLUGIN/repos/essentials/browse/Essentials/src/com/earth2me/essentials/commands/Commandtp.java#48

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Comes with a small problem
miencraft:tp y limit is -4096 ~ 4096
https://github.com/Cat7373/server_diff/blob/master/net/minecraft/server/CommandTp.java#L45
essentials:tp y limit is -30000000 ~ 30000000
https://hub.spigotmc.org/stash/projects/PLUGIN/repos/essentials/browse/Essentials/src/com/earth2me/essentials/commands/Commandtp.java#51