Restructuring causing merged style rules to be overwritten

[xeonicca]

Using clean-css@3.4.20 with the following rules:

.button--black {
  color: tomato;
  border-color: black;
  border-bottom-color: rgba(0, 0, 0, .2);
}

.button--blue {
  color: tomato;
  border-color: blue;
  border-bottom-color: rgba(0, 0, 0, .2);
}

will be minified into the following (unminified for readability):

.button--black, .button--blue {
  color: tomato;
  border-bottom-color: rgba(0, 0, 0, .2);
}

.button--black {
  border-color: #000;
}

.button--blue {
  border-color: #00f;
}

See the border bottom color will be overwritten because the merged rule is moved aboved border-color:#000. While turning off restructuring the code works as intended, but is this considered a bug on clean-css?

[jakubpawlowicz]

It's a bug indeed! Fix is coming.

[jakubpawlowicz]

It's fixed in 3.4.21.