I'm having an issue with multi-part movies

Plex knows that the 2nd file is there and will happily play the 2nd part when the first runs out to the end of the video, but there is no indication that there is a 2nd part and no way to skip between them or choose to start playing the 2 part directly. Is there a setting or option i’m not seeing?

The only way I now to jump to the second part directly is to skip on the timeline until the first part is over.

This is just one of the reasons why I cannot recommend to use this feature.
Maybe you can just join the files?