Reactjs question to the experts, why is the limit on the left position not working?

Question

React

Run the code. Start dragging the green block, note that it is clearly fixed in height, you cannot move it up or down. But on the left side, such a fixation does not work, please tell me why? If you bring the block to the left
https://codepen.io/Sinevik/pen/KQVaGQ

Answer 1

Somehow you have everything verbose and greatly overcomplicated. Why completely override obj and call setState multiple times? Maybe you should create an object once, immediately with the property values ​​you need? Somehow so .