What kind of track is it?
Where is the track located (internal / external drive / USB / etc)?
Rekordbox phrase analysis not working on all tracks. Not all tracks have phrase analyze, also no option to add phrase.
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What kind of track is it?
Where is the track located (internal / external drive / USB / etc)?
MP3
The track is located in the internal hard drive
Which version of rekordbox are you using?
Do you have this checkbox in your preferences?

Yes
You didn't answer the first question - which version of rekordbox are you using?
It's the Beta 
Does this happen with 5.4.3?
Yes, some tracks
Have you selected an appropriate BPM range when setting the beatgrid?
yes, some tracks phrase some don't. This doesn't happen to all tracks
Is there anything else about those tracks that is odd? Like their length? Do they get a beat grid?
3:17 is the length, yes has a beat grid. here is an example
I have the same problem here. RB doesn't analyse the phrase on random songs. I'm running 5.7.0 on Mojave 10.14.6 and songs are like others, mp3 files, internal drive, with beat grid etc. tried many time to analyse phrase without result. what's the solution on this?