No, this is not a known bug - rojart was referring to a different importer. But it could be a yet unknown bug of the 3DS importer.

Check if your entities are transparent, as Spirit suggested. If they are, check the material setting within your 3DS file, and the transparency channel of your texture. Make a bug report with details about your original texture format, alpha channel content and material settings. I can then verify if it's a bug or not.