Problem 1: On occasion, all my seeds disappear from the window. They are still seeding but you cant see their name. If I restart Vuze, they appear again.
I could live with this. Problem 2 is another matter.
Problem 2: I have "Confirm when deleting Data" checked in the preferences. However, in the Classic UI, this does not work. I have never once been asked to confirm. The same button is used to delete seeds and downloads. It is very, very easy to delete the wrong item. I can't count the amount of times that I thought I was deleting a seed and instead I deleted a torrent that I was downloading. I then have to spend much time figuring out which torrent was deleted. This is no easy task when you have 40 torrents downloading. I have wasted countless hours! I notified Vuze of this problem last February. I sure wish that they would fix it.
Don't get me wrong, I like Vuze. I use it more than I use Transmission. However, beware of these bugs!