Making Bootstrap modal resizable with jQuery UI issue

You actually did everything right! But the default overflow behaviour of HTML elements is visible. So if the parent element's content gets overflowed, they break out of the modal and that doesn't look good! So, you need to set the CSS overflow property to scroll or hidden to fix breaking on small size. Try adding:

.modal-content.ui-resizable {
  overflow: scroll;
}

This will ensure scrolling on overflow of the element.

Link to JSFiddle: https://jsfiddle.net/p7o2mkg4/1/

This works (css)

#myModal>div{
overflow-y: hidden;
overflow-x: hidden;
}