Hi all,
With winbox 3.0rc6, when i try to edit a pppoe-client, winbox crashes. With winbox 2.2 no problem.
Thank you 
Do you by any chance remember if you had selected “Profiles” to run?
That will crash winbox in 3.0rc6.
I’ve just tried editing my PPPoE client and it was just fine (Profiles off)..
I also had a crash on it.