Since the last update this week, I’m encountering a visible error.
When choosing a product variation on the product page, in the version before the update, it would display the stock of this variation fine. Now, there’s a visible comment block around the stock number. I’ve been looking through the source files, but so far haven’t been able to find out where this error comes from.

I’ve also tried disabling W3 Total Cache (suspected it might have something to do with minification) but this turned out not to be the problem, the error still occurs.

I’ve attached a screen shot to demonstrate what’s happening.

This is the HTML block that is being produced: