When Magento 2 wants to find a view file from the filesystem, it uses a fallback mechanism with a file resolving method. Unlike when a Class file is missing (where it gives an error) sometimes Magento 2 doesn’t provide an error message or so (even if error display is enforced).
I came up with a typo in the filename, which I didn’t notice, I got empty content area on frontend. No error messages. After a few debug sessions, found some clues on few interesting places to look on such a scenario.