Search results windows crashes when adding / removing attributes columns

[un_spacyar]

This is weird issue, that I can only reproduce it when searching for an specific attribute. This is the step by step process:
1) open the Find... window from Deskbar.
2) search for MPEG audio file (mpeg) Formula: ((name=="")&&(BEOS:TYPE=="audio/mpeg"))
3) the search will bring you all the MPEG files (mainly mp3 files).
4) in the search window, go to the 'Attributes' menu, and add the "Rating" attribute.
5) a new column will appear: Attribute.
6) Click on the 'Attributes' menu again: Tracker will crash.

I am attaching the Tracker crash report.

If I repeat the process and search for MPEG audio file (x-mpeg) (Formula: ((name=="")&&(BEOS:TYPE=="audio/x-mpeg"))), the issue is not reproducible.

In short:
BEOS:TYPE=="audio/mpeg --> fails.
BEOS:TYPE=="audio/x-mpeg --> works fine.
I am using Haiku 32 bit. hrev57719