Spells such as the cleric's Spiritual Weapon and the Wizard's Bigby's Hand enable the caster to continue to manipulate the spell's effect as a bonus action after the spell has initially been cast.
Separately, page 203 of the player's handbook states:
Bonus Action A spell cast with a bonus action is especially swift. You must use a bonus action on your turn to cast the spell, provided that you haven’t already taken a bonus action this turn. You can’t cast another spell during the same turn, except for a cantrip with a casting time of 1 action.
Hence my question is does this prohibition apply only to the initial turn on which such a spell is cast, or to all subsequent turns on which the effect is manipulated as well? Put more fully, after casting a spell with a continuing effect manipulated via their bonus action, can a caster use their action to cast a spell (beyond a cantrip) whilst also using their bonus action to manipulate the continuing effect?