I ignored someone and...suddenly pidgin stopped. No bug buddy prompt either but I did find a fresh core file in my homedir.
The dialog prompting to verify I awnted to remove a buddy stayed after clicking once. Clicking OK twice crashed the program.
Steps to Reproduce:
1. ignore a spammer who you just added as your buddy
dialog would go away after the first click
dialog ignored the first click, whole program crashed on the second click
Created attachment 362774 [details]
backtrace from gdb
Created attachment 362776 [details]
Looks like it can't obtain the group the buddy is in.
Which version of Pidgin is this?
Pidgin 2.10.7 (libpurple 2.10.7)
Pidgin-2.10.7 has been removed from the tree a while ago.
Please report back if it still happens with recent versions of pidgin.