Players are able to damage non-player entitys on the same team even if friendly fire is off

Short description of the issue:

If a player is on a team with friendly fire set to false, and attempts to attack another entity on their team (like a sheep), the attack will still do damage.

Steps to reproduce the issue:

1. Create or join a team

2. Make sure the team has friendly fire set to false

3. Add an entity to the team

4. Attack the previously mentioned entity

Expected result:

The attack does not deal any damage and leaves the entity unharmed.

Actual result:

The attack did do damage and can be lethal often of damage is dealt.

Edit:

When I recorded the first video I forgot to turn off my resource packs. There should be a second video in the comments where turn them off. Sorry