UX feedback for mixing in v1.6.1

[xaur]

A user has kindly written up a bunch of confusing behaviors found in v1.6.1 mixing:

https://www.reddit.com/r/decred/comments/m3k31o/161_things_ive_learned/

Quoting below for convenience. This can be broken down and linked to individual existing and new issues.

I hesitate making a new post for this, but there are a lot of things about 1.6.1 that took time for me to figure out. Maybe this will help others that are mixing coins and buying tickets with new VSP rules.

Doing an on chain scan found 4 coins I didn't know I had. I assume there were votes that didn't register for whatever reason, but that was a nice surprise.

Tickets that vote using Legacy VSP rules have to be moved from the main account into unmixed before they can be mixed.

Tickets that vote using new VSP rules go back into mixed.

When you buy a ticket, you must have at least two UTXO's and any change goes into unmixed. This causes a lot of issues with multiple ticket buying because it looks like you have more mixed coins than you do, since change goes back into unmixed. I just started buying one at a time rather than deal with error messages.

When you run the mixer, it doesn't turn off by itself (at least for me). If you let it run until it looks like most or all of your coins are mixed and then shut it off those transactions can be reversed at some point in the future. This causes confusion (and occasionally an "unexpected EOF" error) when you try to buy a ticket thinking all your coins are mixed. After some experimentation, it is best to let the mixer run until it doesn't generate a transaction in a 24 period, then it is safe to shut off.

Under the transactions tab there is a little link on the right that says "List UTXOs" which I had never seen before (not sure if it is new) and was very helpful for me to diagnose the issues I was having.

There is a weird bug where sometimes if you type in an amount to send, it will put a different amount on the right under the "total amount sending" section. I have yet to be able to duplicate it consistently. Just be sure to check this area before clicking send, because this is what goes out - NOT what you type in.

I couldn't see anything under the governance tab for a while and missed a few votes. Deleting the cached files in the installation folder fixed this.

edit: quoted the full thing to save a few clicks