Bag window off screen and UI bugged - Classic

[VortexiumDev]

Is there an existing issue for this?

• I have searched the existing open and closed issues.

Description

Hi, since the latest update there is an issue with my bag window when I interact with the Bank or the Auction House. The bag window will open partially offscreen and the background border UI appears to be misaligned too. In order to fix this I need to close the bank/auction house and open again.

This appears to happen once after logging on to my character. Screenshot below.

Bagnon Version

Bagnon 11.2.18

World of Warcraft Flavor

Classic Era

World of Warcraft Region

EU

Tested with only Bagnon

I got this issue with only Bagnon enabled

Lua Error

Reproduction Steps

1. In Bagnon settings, under Display Events, set "Display Inventory" for either the Bank or the Auction House.
2. Log in to your character for the first time
3. Open the Bank or the Auction House
4. Inventory will appear offscreen and corrupt.

Last Working Version

Bagnon 11.2.17

Screenshots

Inventory bag window appears offscreen with the background UI and border displaying incorrectly:

[c3lix]

Yep, I support this Bug Report. Have it too.

[AngryTomatoWoW]

Same issue in retail as well, fine 1 minute then shoving bags frame offscreen the next, quite odd

[Suddenly117]

Yes, same issue. It has to do when opening other windows, mailbox, bank, AH, but couldn't tell you how or why. The moment I close mailbox, it's right again.

[Eyevou]

I have the same issue with 11.2.18, rolling back to 11.2.17 fixes the issue. Retail.

[ZhandPally]

Seems like there's a new bug after EVERY dang update with Bagnon...wonder if it's about time to finally give in and move to another bag addon :(

[Severat]

Same issue

[Jaliborc]

Do you have lua errors enabled?

[Jaliborc]

ups, deleted your comment by accident, dont seem to be able to bring it back. but I read it, was able to replicate. was trying to click reply.

[Jaliborc]

Ok, I got some good news and some very bad news. I know it's a lot to read, but its important, please do:

✅ Good news

I was able to determine the cause and make a workaround that stops the issue from happening.
Will be releasing the fix shortly! 🙂

❌ Very bad news

• It wasn't Bagnon's fault at all. This was caused by a major flaw I just discovered on CallbackHandler, a library used by virtually every addon since the dawn of time.
  This means many random bugs and issues over the years across tons of addons are actually caused by this library, and they will keep happening unless the library is fixed, which is not in my power to do.

• It's not the first time CallbackHandler has affected Bagnon either. Many major bugs over the past 2 years, and when I had to essentially rewrite the entire addon for Dragonflight, ended up tracing back to the callbacks, as Bagnon (unfortunately) makes heavy use of CallbackHandler (as no one is apparently aware of these issues).

• I'll report the issue with the library, but as I do not know if it will be fixed, I'll from now on try to reduce the use of this library in my addons over time, which won't happen overnight.
  The issues it causes are the worst type — game-breaking and entirely unpredictable. You change basically nothing in the code and CallbackHandler just breaks, like just happened in this version.

[AngryTomatoWoW]

That's some quick detective work Jb, good luck with the fix and TY for the quick attention.
AT