If the panel pops up and you click to download the song, if the panel forces itself to open again while sliding back off the right of the screen, it'll slide out forcefully, the buttons will be offset from the actual panel overlay. This happened when spectating a friend playing the game, and they changed the song at the right time while the panel was closing.
How to replicate:
1. Open osu!direct panel via a link in chat
2. Click the Close option on it
3. About half a second later, click the same link again
Depending on your timing, the panel and buttons will be offset by a different amount.