1) I was writing a pm and I saved it just in case something happened and I would have to start it from the start again, anyway I saved it and I went back to finish writing it.

In the drafts box I clicked on the message I was wanting to finish and I got this message:

 

The thing is I wasn't starting a new pm, I was trying to get back into the one I had just saved.

 

 

 

2) If you try save a message that has no message subject you get told:

The message hasn't been sent because the message subject needs to be at least 2 characters long. (Yes I am sure I pressed "Save (Send later)")

 

 

 

3) If you have some links in your message e.g

and you save it as a draft and then you go back to it, all the links are collapsed onto each other. e.g

 

I know none of them are really major problems or anything, but I thought I would mention them.

Sounds to simply be a factor of how the system works.

 

When you save a draft it "sends" it to a invisible fake user of sorts, to store it for later.

Which would cause 1 and 2 to occur

I don't know how it works programatically but I'd assume it's because you "started" a pm topic when you started writing it, not when you sent it. I doubt this is easily fixed. No idea about #2 and #3.