Suddenly almost all my tags are gone from the message list. Only messages newer than about 3 months seem to still have the tags. If I do a search from the search box above the message list, the messages appear with the tags! I can even search for the tags. However, if I do Search Messages (Ctrl+Shift+F), the tags are not displayed and I can't search by them. Old messages stored locally still have their tags. It's just the ones in the IMAP account that are not being displayed (even though they are still there somehow, as described above). I hope somebody can help. I need these tags to organize my work.