WD TV does not play individual VOB file anymore?

I have one large movies that has over 100 vob files (each vob file is a short music video), I was used to select individual vob file to play or hit ==>  or <== to play next or previous vob file.  However, after many upgrade, it seems no matter what vob file I select, WD TV always play at the beginning (the first one), and I can not skip to the previous or next vob file anymore.

Is it the bug with new firmware or is it worked as designed with latest firmwares?

Would someone please comment?

Are they inside of a VIDEO_TS folder?   If so, try taking them OUT of that folder.

No, they are not in VIDEO_TS folder