WowAce

The line 47 change in r235--adding frame:RegisterEvent("ADDON_LOADED")--directly causes issues with the NDragIt frame dragging mod (which uses Rock, from http://www.wowace.com/projects/ndrag-it/). That mod + this updated library causes problems with at least the Blizzard default Auction House frame. NDragIt works without issues with r233 of this library.

r235 of LibRockEvent-1.0 (and all other Rock libraries) standalone, NDragIt r77818.2 (not updated for 3.x, but has worked without issues), WoW 3.0.3 live, USEng client/server. No other mods active during testing. Log on, head to the Auction House, talk to an auctioneer. When the AH frame appears, all the bottom tabs ("Auction", etc.) are repositioned improperly in the middle of the frame.

Relog a few times, exit & come back, the behavior reoccurs each time. Roll back to LibRockEvent-1.0 r234/"WoW-3.0-release-2", the frame goes back to normal without issues. Its 100% reproducible behavior here.

Have also seen the profession frames get distorted, but have not tested long enough on a main character to verify that its always reproducible there as well. Also have tested with Rock FuBar 3.5 & Cartographer2 (loading each alone), but no AH frame issues with them. Its solely a combination of NDragIt and r235 of the LibRockEvent-1.0 library causing the problem.

Why worry about the outdated, Rock NDragIt? Because other similar addons don't measure up and until this library change, it has worked without issues.

The DragQueen mod (Ace3, http://wow.curse.com/downloads/wow-addons/details/drag-queen.aspx) "takes over" the top areas of any frames it can move, unlike NDragIt. Which means mods that put interface options at the top of frames--like Postal (http://www.wowace.com/projects/postal/) does--can't be accessed (issue reported, not responded to). The FloatingFrames mod (http://wow.curse.com/downloads/wow-addons/details/fframes.aspx) has been historically buggy, defaults to saving frame positions and doesn't handle its option switching properly.

So would be nice to see this library fixed (if possible) to include its bug fix in a way that doesn't bork NDragIt. And/or roll back the default download to r234.