Hahah, exactly, the largest facepalm of the year! (so far...)
I'll try to post this comment, and see how many RCs it will cost me. IF it is posted, anyway... crappy fork, should have been tested more, although the whole "negative RC case" should be pretty obvious to begin with.
EDIT: So, my RCs remained the same according to steemd.com, Is there a table with the operations that cost RCs?
EDIT2: So, after some delay the RC cost was subtracted from my mana! This comment originally costed 13,592,716,209 RCs... and I have to admit that it is not at all intuitive and it does not help me to manage my actions, as the intention of the designers was.
Enabling the formation of a mental model is critical to satisfying our third design requirement: more predictable user experiences on Steem. The predictable model that will result from this new system will enable simple and effective feedback from user interfaces (UIs) to inform users about their RC usage, their remaining RCs, the cost of new transactions (measured in RCs), and options for purchasing additional RCs by powering up SP if they would like additional bandwidth.
I do not understand a thing! My mental model is not working.
Understanding is a three-edged sword... maybe it currently also costs RCs!
I was reading A Song of Fire & Ice (Game of Thrones) and the blonde dragon princess was told that "to go west, you must first go east"... maybe this is true for steemit too: to enjoy "more predictable user experiences" we must first go through some totally UNPREDICTABLE ones! :)
Hahaha :)