How do I keep a playlist from ending prematurely?

[AyumiSpender]

I've noticed this for a while now and I'm not sure what causes it or how to stop it.

If a playlist is maybe 75+ hours or less, while during certain pauses and breaks as I can't listen 24/7 (I try to though), it will play the whole playlist and then in the end play me some recommended due to the playlist that was playing. This is really nice.

But...

If a playlist is in the 80s, 90s, all the way to let's say almost 300 like one playlist I'm following, it might play around 5 hours... then cut short and only play recommended from what I was listening to.

Why don't really long playlists play the whole list? Is this intentional? If not, how do I fix it?

I used to play super long playlists on shuffle due to them being so long, but then I realized that some (like that almost 300 hour long playlist) I might never get to hear due to the randomization. Would at least one go from top to bottom without having to literally watch it every few minutes to make sure that it's continuing on... and if it doesn't, I can remember the placement it is in the playlist and stop the recommended and continue off where it last ended.

[AyumiSpender]

The problem is still happening.