Quote Originally Posted by Aura_Shurifon View Post
The problem is, some people want "when mouse over nothing, do nothing" and other want "when mouse over nothing, cast on me"
The hotfix changed it back to the original because that pattern allows more flexibility. Having it automatically cast on yourself when failing the first attempt prevented things like a macro that can cast on either <t> or <tt>, or one that can cast on either <mo> or <t>, whereas people who want the "cast on myself" default can do it anyway with another <me> line in the macro.

The only disadvantage of the current version is, as mentioned, those errors on the screen. A post in another thread requested a <noerror> option, which seems a better solution than a universal default like casting all heals on yourself when the specified target is invalid.