should not change input value when changing "defaultValue" attr.

[jo32]

react: https://jsfiddle.net/jo32/85fgabqy/

vs

preact-compat: https://jsfiddle.net/jo32/0gzo34u6/

[gavar]

I can confirm the issue exists on version 3.18.4

Lines of code affecting it:
https://github.com/developit/preact-compat/blob/3.18.4/src/index.js#L96-L101

You could temporary solve this problem by inverting logic after rendering, by calling this function on the react element:

function fixDefaultValueBug(element, props) {
  const {value, defaultValue} = props;
  if (defaultValue) {
    if (!value && value !== 0) {
      delete element.props.value;
      element.props.defaultValue = defaultValue;
    }
  }
}