Nope. The freezing issue is still happening and the thread about it has now been open for over a year, with the last Blizzard post in the thread being many months ago…
Quite frankly, as this issue is still happening, I have no idea why people are willing to even attempt hardcore heroes in the full knowledge that tens / hundreds / thousands of hours of play-time could be wiped out in 5 seconds of freezing caused by a bug that Blizzard haven’t fixed in a year.