Send MailboxUpdate events when threads are updated

Depending on the insertion order of folders which is non-deterministic
because it relies on the kernel's scheduling of parsing threads, the
listing the user sees might not be up-to-date because later thread
updates are never broadcast. This results in inconsistencies between
threads and mail listings when a thread's root envelope was part of a
not broadcast update leading to `key not found` panics in a listing's
hashmaps.

1 files changed, 8 insertions, 2 deletions

diff --git a/ui/src/conf/accounts.rs b/ui/src/conf/accounts.rs
index 3bf8bd8a..1ebfe606 100644
--- a/ui/src/conf/accounts.rs
+++ b/ui/src/conf/accounts.rs
@@ -468,8 +468,14 @@ impl Account {
             return;
         }
         let (envelopes, mut mailbox) = payload.unwrap();
-        self.collection
-            .merge(envelopes, folder_hash, &mut mailbox, self.sent_folder);
+        if let Some(updated_folders) =
+            self.collection
+                .merge(envelopes, folder_hash, &mut mailbox, self.sent_folder)
+        {
+            for f in updated_folders {
+                self.notify_fn.notify(f);
+            }
+        }
         self.folders
             .insert(folder_hash, MailboxEntry::Available(mailbox));
     }