I've already decided to redo a good portion of that section, so that may fix a lot of your issues, though I'm not sure what you mean by "her ability". Are you talking about the on map ability? Because that's actually Ardien's ability and I believe I had it fade to black there FOR the animation (so that ISN'T a bug; that's a kind of screen transition that you are confusing for a bug. It is supposed to do that)
As to the sounds, I'm considering removing the things making those sounds even though there's already options in the settings to turn sounds down (I thought it might be an interesting effect, but it does get annoying) I know that isn't really a solution, but I'm not really planning on releasing another demo (I've already stated this in the devlogs) I'd rather just focus on finishing it right now, which may take a fairly long time (just to be realistic)