Tamed wolves do no longer teleport to the player when they are in Water.
(this behaviour startet with 1.14.4 Pre Release 2).
In 1.14.3 when you're travelling with a bunch of wolves and swim through water, they follow you into the water and swim (slowly), and when you reached solid ground they instantly teleported to you.
Now when you swim through water (directly, or by using a boat), when you reach solid ground they keep swimming until they reach solid ground, then they will leave water and walk or teleport towards the player.
This makes traveling with wolves a bit difficult if not impossible.

There is a bug report MC-156005 which says "tamed wolves dont teleport when far away", but it doesn't cover the water thingy i think.

Comparing 1.14.3 with 1.14.4: https://youtu.be/jGaM7knybzM

Comparing 1.14.4 Pre Release 1 with 2: https://youtu.be/y8qlDQOs7rk