The issue with the gradient does exist! Anytime you get close to adjusting the color selector it will create a new and they are impossible to remove. To add onto this, sometimes the values show and sometimes not. Pretty sure there are a few other posts in the forum mentioning the same thing or VERY similar. Here is one Gradient Tool Bug - #4 by AnnaKelian.
Users may make mistakes in building layouts and experience complications but typically I don’t think most users are going to have trouble selecting a color it the tool is working correctly.