What is happening:
During the "Mindless Violins" and the "It Belongs in a Museum" quests, Quest Marker glitches and broken dialogue with Silver Hoof.
Pyrite remains throughout the entirety of the two quests (up until your first dialogue with Silver Hoof that I am aware of) with a quest marker above his head.
Upon trying to talk to Silver Hoof and selecting the "I need some information about a statue" dialogue option, the dialogue is closed completely.
Silver Hoof lacked a quest marker here, as well, despite having the option (somewhat) to select the aforementioned dialogue option.
[I should mention that within my journal the next documented step of the quest is to "Find Silver--Hoof". All other steps appear completed.]
What should be happening:
After completing the appropriate steps of both quests involving Pyrite, the marker should disappear.
Silver Hoof should have a quest marker in the second quest, and the dialogue should continue as normal.
Steps to reproduce the issue:
Launch the game, using the 0.4 Launcher, and log in (Server in question was Amareicas from the beginning of Mindless Violins and onward, but I believe changing servers made no difference here).
Begin the quest "Deleting Cookies and Collecting Data", complete it.
Begin Mindless Violins, and complete steps accordingly. (By now, Pyrite's exclamation point/quest marker does not leave.)
Complete Mindless Violins, [albeit slightly disoriented by a lack of direction caused by a magical quest marker in the Heartlands], and move on to It Belongs in a Museum.
Somewhere throughout It Belongs in a Museum, after consulting Fire Opal, you are instructed to talk to Silver Hoof. Once more, there was no quest marker on the map to indicate this, aside from that of Pyrite's quest marker which had been there for an hour before.
Game client version:
v 0.1.8, as of 11.09.17 (dd/mm/yy)
User "LittleBolt" had similar issues in the same quest, however, only dialogue-related and with another NPC.
Windows 7, x64
Crash logs or exceptions generated: