Hey i think i found a Bug. here is the scenario: you are logged into a WiFi network and then select the gateway(Router) itself (to snuff your own traffic).
now you start the poisoning and the wireshark. as soon as you browse on a http site yourself, the wireshark crashes. it says "process terminated". the Terminal window is Not affected. sometimes the Terminal detects your http visit, sometimes Not. In most cases it does Not. the raw.pcap file, produced from the wireshark, is mostly compromised, which means it cannot be opened.
to reproduce the bug: it doesnt matter what options you click, as far as you click the "save pcap File" Option the crash is reproducible.
if you dont save the pcap file the crash doesnt occur.
feel free to check/see for your own. I checked this with various busybox versions and various root options(kingroot,supersu and so on) on three smartphones(Android 4.4 - Android 5)