When viewing T106897#1485594 through the web interface, it shows
yuvipanda reassigned this task from Krenair to coren.
but the email notification for that says
coren claimed this task.
Expected: In email also, it should be yuvipanda reassigned this task from Krenair to coren. for consistency.
Also my understanding is that "claimed this task" means "User A claimed the task on their own" not "User B assigned this task to User A". so it's kind of misleading.
I assume you confused this with another task. My mail notification for that event was:
yuvipanda reassigned this task from Krenair to coren. yuvipanda added a subscriber: yuvipanda.
but you don't appear in the Cc list at all:
To: coren, yuvipanda Cc: yuvipanda, coren, Merl, Andrew, liangent, MZMcBride, Nemo_bis, Vituzzu, Mjbmr, Dapete, Legoktm, Matanya, Dereckson, Sitic, Ricordisamoa, Billinghurst, Pathoschild, gerritbot, scfc, Krenair, Krinkle, Aklapper, Gryllida, jayvdb, Malyacko, P.Copp
Indeed, my bad. :) That was T106963#1485598 which happened at the same time and I saw the other task's change on IRC. Thanks.