Wireshark-users: [Wireshark-users] iSCSI display filter

I'm a rookie to Wireshark. I was trying to use it to analyze the iSCSI traffic in a trace file. The problem I came up with is that when I put "iscsi" in the filter bar, Wireshark always gave me nothing...

But I did see the iSCSI traffic in the frames...

Did I do it wrong...?

Any help would be highly appreciated!