Teleport between two entities with @e selector where one or both have more than one entity of same name/type does not work

When teleporting an entity to another entity using the @e selector where either entity has other entities of the same name/type does not work. One can reference the command /tp @e to show how teleporting to multiple entities should function, as this would teleport to all entities of the same conditions if that were the case.

Test 1 (type):

1.Summon two pigs: /summon Pig ~ ~ ~
2.This command results in error 'The entity UUID provided is in an invalid format': /tp @e[type=Player] @e[type=Pig]

Test 2 (name):

1.Summon two pigs with names:

/summon Pig ~ ~ ~ {CustomName:Bob}

2.This command results in error 'The entity UUID provided is in an invalid format': /tp @e[type=Player] @e[name=Bob]
3.This command also results in error 'The entity UUID provided is in an invalid format': /tp @e[name=<your player name>] @e[name=Bob]