Same here, Rapid Recharge + Omnicharge Signet = 120% reduction but some code exception (understandably ment for something else) makes it no reduction, much sad. Found out in match and tested it in testing range.
Match ID: 51786879
Happened to me to on Viscous. Dev keys didn't work and game ended before an enemy got near to try phantom striking them, also warp stone didn't work.
Match ID: 32600117
Happened in the last 5ish minutes