By Washington Post | PUBLISHED: January 23, 2019 at 10:26 am | UPDATED: January 23, 2019 at 11:02 am By Des Bieler, The Washington Post Another Serena Williams appearance at a Grand Slam event, another notable moment of officiating as she lost in memorable fashion. This time, the former world No. 1 didn’t explode in anger at an umpire, as she did in losing to Naomi Osaka in September’s U.S. Open final, but an ill-timed foot fault Wednesday in the Australian Open quarterfinals set the stage for a stunning loss to Karolina Pliskova. An ankle injury in the third set likely had more to do with Williams’ defeat, in which she blew a 5-1 lead in that final frame to fall, 6-4, 4-6, 7-5. However, that injury came immediately after Williams was called for a foot fault while serving on a match point, raising anew questions about whether she is getting the deference that some think should be accorded a player of her stature. As it was, the 37-year-old Williams will have to wait at least until the French Open in late May to try again to tie Margaret Court’s mark of 24 Grand Slam singles titles, a record for…