Incorrect generated selector with @import and extend

[zxcabs]

Hello,
here is an example for reproduce the bug
less version: 2.7.2 and v3.0.0-alpha.1

bar.less

.foo {
  background: red;
}

.bar {
  &:extend(.foo all);
  font-size: 10px;
}

root.less

.root {
  @import './bar';
}

Actual result:

.root .foo,
.root .root .bar {
  background: red;
}
.root .bar {
  font-size: 10px;
}

Expected result:

.root .foo,
.root .bar {
  background: red;
}
.root .bar {
  font-size: 10px;
}

[seven-phases-max]

This is expected behaviour. See #1850 (and other issues referenced there, e.g. #2052, for variations).

[seven-phases-max]

Closing as duplicate of #1850.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.