Spotify playlist duration not updating

[commentspae]

I have a list of songs that is full of a variety of music. There are nearly 600 songs total as of now. However, the duration for it all is the same. It only remains 7 hours and 10 minutes long despite the fact that I'm still updating it with more songs. Why has the duration stopped updating and how is it fixed? Additionally, this is on the browser edition but I can't know if it's on any other version.

I tried removing cookies and it didn't get rid of the delay either.