Virtual Folder Tabs Don’t Receive `selected-folder` Class on Activation; Prior Tab Retains It

[rickgordon]

[ Thunderbird 140.10.0esr (aarch64), QuickFolders 6.15.1 ]
THEME: Flat Style
COLORS: Pastel Colors
DISABLED: For colored tabs: override Active Table color

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SYMPTOM: When making a virtual folder tab the Active Tab (either Smart Folder or Unified Folder), the tab does not take on the “Active Tab” color scheme, and the previously active non-virtual tab maintains its Active Tab color.

ANALYSIS: When selecting a virtual folder tab, the previously selected folder tab (box#QuickFolders-FoldersBox.folderBarContainer.quickfolders-flat > toolbarbutton) maintains its “selected-folder” class, and the newly selected virtual folder tab does not get the selected-folder class added to it.

STEPS TO REPRODUCE:
1. Assign Flat Style / Pastel Colors in Bling My Tabs
2. Click any non-virtual folder tab (e.g. a real account Inbox) — it correctly shows Active Tab color
3. Click a Unified Inbox or Smart Folder tab — it does NOT take on Active Tab color
4. Previous tab retains its  selected-folder  class (confirm via browser toolbox)

[RealRaven2000]

I think it is actually caused by #666 - going to QuickFolders Settings sets the data-preview-mode attribute (within the toggleToolbar function) and it isn't actually removed causing such problems. Working on a reliable reset possibly on the tab selection listener.

[RealRaven2000]

Try this version:

QuickFolders-mx-6.16pre51.zip

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To install version above download zip file and drag the file into Thunderbird Add-ons Manager (do not extract contents, it won't install like that).