Is there a way to fix the bug of the Unseen Visions quest?

The moths won't fly straight at you after collecting the bark. You need to walk around through the glade and actually find the moths. Whenever you find a moth and walk through it, the counter should go up and your vision should be affected.

When you collected 7 moths, the next stage of the quest should fire and tells you to stand in a certain place.

If the moths don't want to 'stick' it could be a scripting problem, try the following:

1. reload a save from before entering the glade. Or load a save just after entering (autosave?) and walk out again.
2. fast travel far way, like Winterhold.
3. Restart the game
4. Fast travel back to the glade and try again.

I had the same bug I finally got it to work. Make sure you have not built your house in Falkreath (lakeside manor). I say this because I downloaded the Xbox quest debugger and the first time when I auto-selected the quest it brought up byohfalkreath.... I reloaded a save prior to building it and went to the glade. Make sure it is the ONLY ACTIVE QUEST (don’t forget to check all Misc.). Used auto-select and it correctly selected the quest. Cast it again and choose “complete next stage”. It can take a few minutes (2-3). Go to the column of light and you may have to repeat the process of auto-select, “complete next stage” and it should work. It was a hassle but it worked. Don’t do these steps until after you have collected the bark and gotten the quest update with the number of swarms collected displayed. (It will be 0) that is when you can use the debug tool.