Unable to get ftp request_command field if 'use_json == True'

[ReasonJinMing]

json contains the infomation, but pyshark cannot extract it

[KimiNewt]

Can you attach a sample capture? I think that if you're using the latest version it ought to be accessible (check your pkt.field_names)

[ReasonJinMing]

Can you attach a sample capture? I think that if you're using the latest version it ought to be accessible (check your pkt.field_names)

1.1.7.107-34826 -- 1.2.174.140-21 FTP.pcap.zip
I‘m sorry for replying too late. I will give a more detailed description.
For the sample pcap file and pyshark version is 0.4.2.9, if opening with use_json mode, the result shows like the following.

However, if opening with pdml mode, the result shows like the following.

Clearly, there are differences between the two mode.Some packets with request_command field can be shown in pdml mode but cannot be shown in json mode.