I have a Saved Search folder that filters on unread messages (Message Status = Unread). Often there will be unread messages from multiple folders in that one search folder.

If I do a "Mark All Read" on the unread search folder, it marks all the messages as read in the search folder.

*But* For all the actual folders where the unread msgs are, only one folder will have its unread count cleared (it always seems to be the first folder in the tree).

Initially, for the folders which are displaying an unread count, the messages actually display as read - hence the count would appear to be inaccurate. 

Soon though (next sync?) the messages will revert to showing an unread status and *can't* be marked read.

Restarting kontact does not resolve the problem, but eventually it resolves itself - next sync maybe?

Reproducible: Always

Steps to Reproduce:
1. Create a saved search folder that displays all unread messages (Status = Unread)
2. Wait for multiple unread messages to appear, from multiple folders
3. Using the saved search folder, mark all messages read
Actual Results:  
- Only the first unread folder has it unread count set to 0

- the other unread folders will initially have no unread messages, despite displaying an unread count

- Eventually the msgs will revert to an unread state and can't be marked unread

Expected Results:  
All messages should be marked read
All folder unread counts should be set to 0

Rather than waiting for new msgs to arrive you can just mark message unread for testing