Describe the problem

Recently I have the problem that stometimes when opening the Dungeon Finder and checking the open listings, I get an error message that an action from an addon was blocked. I enabled the Taint Logging and found the entry mentioned further below in this issue.

What steps will reproduce the problem?

"Unfortunately", it cannot be reproduced consistently. Sometimes I can open the Dungeon Finder and check the open listings without problems, other times it does not work. So looks like the "tainting code" was not run yet in the case when it works.

Consider attaching a screenshot below to help describe your issue (Attach directly, do not link to other websites)

n/a, just the yellow message in the main chat window that an acttion from an addon was blocked.

What version of the addon are you using? (Stating 'latest' is not useful)

Version: v10.0.1

Do you have an error log of what happened?

From Blizzard's taint.log file:

10/30 09:42:31.739  An action was blocked because of taint from BasicMinimap - Search()
10/30 09:42:31.739      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGBrowse.lua:225 LFGBrowse_DoSearch()
10/30 09:42:31.739      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGBrowse.lua:178 LFGBrowseFrame:SearchActiveEntry()
10/30 09:42:31.739      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGParentFrame.lua:92 LFGParentFrame_SearchActiveEntry()
10/30 09:42:31.739      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGListing.lua:67

Any additional information? (example: WoW language if not English)

Yes, I changed some of the settings, and sometimes use it to change tracking or open the calendar with the right/middle mouse button:

Have you customized the "clicks" functionality? Are you using minimap clicks other than just left click?

Does opening the calendar and tracking with those clicks before using LFG allow you to reproduce the issue 100%?

Yes, but only when opening the tracking menu. Once I do that, the issue is 100% reproducible. No need to actually select anything, just opening the tracking menu is sufficient.
Opening the calendar works fine and does not cause any taint.

Oh, just noticed a second issue, which I think is the same (or very similary) as originally reported in issue #68 .

10/31 00:23:49.996  An action was blocked because of taint from BasicMinimap - GuildControlSetRank()
10/31 00:23:49.996      Interface_Wrath\FrameXML\FriendsFrame_Wrath.lua:487 GuildControlPopupFrameDropDownButton_ClickedRank()
10/31 00:23:49.996      Interface_Wrath\FrameXML\FriendsFrame_Wrath.lua:239 GuildControlPopupFrame_Initialize()
10/31 00:23:49.996      Interface_Wrath\FrameXML\FriendsFrame_Wrath.lua:156 FriendsFrame_OnEvent()
10/31 00:23:49.996      FriendsFrame:OnEvent()
10/31 00:23:49.996      SetGuildRosterShowOffline()
10/31 00:23:49.996      GuildFrameLFGButton:OnClick()

I can also 100% reproduce this by following these steps:

• Define a "click" to open the tracking menu in BasicMinimap
• Do that click to open the tracking menu (no need to select anything)
• Open the "Guild" tab and toggle the "Show Offline Members" checkbox (does not matter if on->off, or off->on)

Managed to get some more details on the issue by disabling all addons except BasicMinimap:

10/31 23:55:23.485  Global variable UIDROPDOWNMENU_MENU_LEVEL tainted by BasicMinimap - Interface\FrameXML\UIDropDownMenu.lua:966 ToggleDropDownMenu()
10/31 23:55:23.485      Interface\AddOns\BasicMinimap\BasicMinimap_Wrath.lua:686
10/31 23:55:23.485  Execution tainted by BasicMinimap while reading UIDROPDOWNMENU_MENU_LEVEL - Interface\FrameXML\UIDropDownMenu.lua:890 UIDropDownMenu_GetSelectedID()
10/31 23:55:23.485      Interface\FrameXML\UIDropDownMenu.lua:550 UIDropDownMenu_AddButton()
10/31 23:55:23.485      Interface_Wrath\FrameXML\Minimap.lua:399 initFunction()
10/31 23:55:23.485      Interface\FrameXML\UIDropDownMenu.lua:79 UIDropDownMenu_Initialize()
10/31 23:55:23.485      Interface\FrameXML\UIDropDownMenu.lua:1094 ToggleDropDownMenu()
10/31 23:55:23.485      Interface\AddOns\BasicMinimap\BasicMinimap_Wrath.lua:686
10/31 23:55:23.485  An action was blocked because of taint from BasicMinimap - Search()
10/31 23:55:23.485      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGBrowse.lua:225 LFGBrowse_DoSearch()
10/31 23:55:23.485      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGBrowse.lua:178 LFGBrowseFrame:SearchActiveEntry()
10/31 23:55:23.485      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGParentFrame.lua:92 LFGParentFrame_SearchActiveEntry()
10/31 23:55:23.485      Interface\AddOns\Blizzard_LookingForGroupUI\Blizzard_LFGListing.lua:67

Hm, I just learned that this apparently is caused by a bug on Blizzard side that has not been fixed in over three years now :/
--> Stanzilla/WoWUIBugs#4

Thanks. I appreciate all the info but no more is needed lol.
The fix for this is re-creating a custom tracking menu, which will take some time.
Until then, you can resolve this issue by typing /reload when it occurs.

Maybe https://www.wowinterface.com/downloads/info24408-LibUIDropDownMenu.html would help? According to the description this lib aims to avoid taints while still providing the UIDropDownMenu features.

This is now resolved in retail wow, but we must wait for a future patch for the new dropdown system to be backported to classic.

This issue will remain open until then.

Should finally now be resolved with WoW Cataclysm 4.4.1 which backports their new menu system from retail WoW.