Really good to see you've NOT fixed the related tracks bug I logged in the beta phase of 5.1

Is your peak playlist an intelligent list?

I noticed related tracks matching can't do intelligent lists but are OK with a regular playlist. 

AH HA! There is the bug.

Yeh all my playlists are intelligent playlists so I didn't notice that problem. Just created a quick manual one and it works fine. So there is the problem Pioneer, and needs to be addressed.

Kind of shocking that I raised this nearly 2 months ago as a legitimate bug, nothing has been done about it and I was pretty much ignored.

You Lofty managed to find the problem within a couple of hours. Well done you!

here to post this same bug - only works with "dumb" playlists, not intelligent playlists. ALL my playlists are intelligent playlists. What's going on?

Also what happened to the ability to show related tracks from the currently selected playlist? 

Absolute silence...speaks volumes... (Maybe the tech team were unable to log in on this AWFUL site like I was yesterday)

"Also what happened to the ability to show related tracks from the currently selected playlist?"

Yeh, that went too. Another concern I raised which was completely ignored. I understand why it might not be in the new related search on the left panel, but why it was removed from the right panel I cannot understand. 

I'm in 2 minds as to whether to give Serato a go and see how I get on.

These new changes are having to change the complete way I used RBDJ after becoming comfortable with it, so might try something else.

Yes, the inadvertent removal of "Related tracks from Current Playlist" is a big issue for me, and many people on forums.  Lots of discussion yesterday on other forums since this forum's sign on was broken. I had to message 3 of the social media contacts (instagram, youtube etc) to alert the Pioneer team that no body could post all day.  

In any case, yes, they need to fix the issue with intelligent playlists as well as related playlists.  Only thing I can think of is to file an official inquiry so the programmers can see it. Not sure if anything will happen in the next week since it's NAMM week :(

I'd happily stay at 5.0.3, which has related tracks that actually work, but I may need the newest version to use the upcoming DDJ-1000.

I submitted something here https://rekordbox.com/en/support/inquiry.php - everyone should! maybe they'll figure it out for us!

Has this issue once again reared its ugly head?

I can't seem to find the option to show related tracks only from the currently open playlist, instead of having to permanently check/uncheck playlists from the list.

Are we sure this is a bug and not removed feature?

Sometimes things get removed because it impacts the performance of software. 
There are a few others features that don't support the intelligent playlists.