@import files are not being watched in development mode

I thought pull request #995 should fix my issues, but apparently the current version I'm using of the LESS JS (less-1.6.3.min.js) is not watching over my import files and keeps adding them to the local storage. The only way to get the @import files refreshed is dumping my browser's local storage.

I'm using the following to setup development mode and watch mode:

less.env = "development"; less.watch();

An example of how the @import files are being imported in my style.less:

@import "_vars";
@import "_grid";
@import "_basics";
@import "_vars";

Summarising:

• All the .less files are being imported correctly.
• All the non-@import files are being refreshed after being modified.
• All the @import are only being refreshed when dumping my browser's local storage.

Reproduce the issue with less-1.6.3.min.js using less.env = "development"; less.watch(); and the shown @import files. Trace the watch and local-storage behavior for imported files; done means modifying an imported .less file refreshes the result without clearing browser local storage.