Please describe the problem:
I upgraded from 2.26.0 to 2.26.1.1 and was happy to see the Unmatched search folder returned, however...

It seems that whenever I am viewing a search folder, if/when I read/delete messages from within the search folder and go to another folder (search folder or not), the status bar will say "Saving <name of search folder> and then the UI will just hang.  It stops responding completely.  I can't even close the app with the close button and end up having to go to the shell and type "evolution --force-shutdown"

Also the search folder count *was* more accurate in 2.26.0 but are way off in 2.26.1.1.  I have a search folder that checks the from address.  With 2.6.1.1 some show up in the search folder and some do not.  It appears to be random.

Steps to reproduce:
1. Open Evolution
2. Click on a Search folder
3. Read/delete messages in that search folder
4. Hang

Actual results:


Expected results:
I expect to be able to continue to read my email.

Does this happen every time?
Like 99% of the time.  It seems if I go directly to the Inbox and read mail I can avoid the issue.

Other information:
Search folders haven't worked right since 2.22.x.  It seems with each subsequent release the situation gets worse and worse.  It's really frustrating for the user because search folder is *the* way a lot of users grok through email, especially if they receive a lot of messages.  I really long for the days that search folders actually worked reliably/predictably.