Have they fixed mages being able to learn cleric spells?

Or jumping everywhere as a bonus action to disengage?

Or giving thieves an extra bonus action to attack with, making them attack better with dual wielding than a ranger or fighter.

These and a few more are pet peeves of mine, which is not just from a D&D standpoint, but from a "it doesn't make sense in any RPG" standpoint and I won't go back to the game unless they fix it.