Hi
The browser is Safari Version 8.0.2 (10600.2.5), FireFox version 36.0.4 and Chrome Version 41.0.2272.104 (64-bit).
All the browsers display the same as the screenshot - how_to_unselect_the_list.png.
Anyway, I double click on the top corner of the incorrect item inside the category, it being removed now.
Is it a bug or
Regards
Jasmine