This appears to be fixed, now.

This is a duplicate of https://feedback.bistudio.com/T182054

In T181931#2629645, @CocoNuts wrote:

and all players where automatically switching between squad teams.

Yeah, definitely think this is starting to catch on. Today I had matches that I consider ruined from players exploiting this (throwing all of the base supplies on the ground.

This ticket can probably be closed, as transport requests to objectives (and group leaders) have been removed from vanilla Conflict. The only remaining transport request is to deployed radios within a group.