Certain tracks on albums not downloading

[ajscott1983]

This seemed to happen after i updated the spotify app. Take Definitely Maybe delux edition by Oasis for example, it has 44 songs in total, i saved the album and downloaded it to my phone. Yesterday every song on the album was downloaded on my phone, now today, what seems to be a random selection of songs from the album are downloaded. What happened to the rest of them? I have over 32gb of space on my phone.

Same thing happened with a few other albums too.

Anyone else experience this, or know why its happened?