JavaScript not minifying intermittently

[nayaky]

We are using ClientDependency 1.7.1.2 in our application. Recently we are seeing issue where in intermittently for one of the js (raphael-min.js) is not minified properly and its header section still contains all the comments. This is causing application to break, To temporarily fix this we have to get clear redis and alamai cache.
Attached image of the problematic js for reference.