diff --git a/Frameworks/Account/Account.swift b/Frameworks/Account/Account.swift
index 70d0fc977..cb200e9a1 100644
--- a/Frameworks/Account/Account.swift
+++ b/Frameworks/Account/Account.swift
@@ -18,6 +18,8 @@ import ArticlesDatabase
 import RSWeb
 import os.log
 
+// Main thread only.
+
 public extension Notification.Name {
 	static let AccountRefreshDidBegin = Notification.Name(rawValue: "AccountRefreshDidBegin")
 	static let AccountRefreshDidFinish = Notification.Name(rawValue: "AccountRefreshDidFinish")
@@ -684,6 +686,7 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 	// MARK: - Container
 
 	public func flattenedFeeds() -> Set<Feed> {
+		assert(Thread.isMainThread)
 		if flattenedFeedsNeedUpdate {
 			updateFlattenedFeeds()
 		}
diff --git a/Frameworks/Account/AccountManager.swift b/Frameworks/Account/AccountManager.swift
index efe7305f0..acb53cd5b 100644
--- a/Frameworks/Account/AccountManager.swift
+++ b/Frameworks/Account/AccountManager.swift
@@ -10,6 +10,8 @@ import Foundation
 import RSCore
 import Articles
 
+// Main thread only.
+
 public extension Notification.Name {
 	static let AccountsDidChange = Notification.Name(rawValue: "AccountsDidChange")
 }
@@ -51,6 +53,7 @@ public final class AccountManager: UnreadCountProvider {
 	}
 
 	public var activeAccounts: [Account] {
+		assert(Thread.isMainThread)
 		return Array(accountsDictionary.values.filter { $0.isActive })
 	}
 
diff --git a/Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift b/Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift
index 715cd275f..8086f3dd4 100644
--- a/Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift
+++ b/Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift
@@ -602,8 +602,8 @@ private extension FeedbinAccountDelegate {
 	}
 	
 	func syncFolders(_ account: Account, _ tags: [FeedbinTag]?) {
-		
 		guard let tags = tags else { return }
+		assert(Thread.isMainThread)
 
 		os_log(.debug, log: log, "Syncing folders with %ld tags.", tags.count)
 
@@ -613,13 +613,11 @@ private extension FeedbinAccountDelegate {
 		if let folders = account.folders {
 			folders.forEach { folder in
 				if !tagNames.contains(folder.name ?? "") {
-					DispatchQueue.main.sync {
-						for feed in folder.topLevelFeeds {
-							account.addFeed(feed)
-							clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
-						}
-						account.removeFolder(folder)
+					for feed in folder.topLevelFeeds {
+						account.addFeed(feed)
+						clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
 					}
+					account.removeFolder(folder)
 				}
 			}
 		}
@@ -635,9 +633,7 @@ private extension FeedbinAccountDelegate {
 		// Make any folders Feedbin has, but we don't
 		tagNames.forEach { tagName in
 			if !folderNames.contains(tagName) {
-				DispatchQueue.main.sync {
-					_ = account.ensureFolder(with: tagName)
-				}
+				_ = account.ensureFolder(with: tagName)
 			}
 		}
 		
@@ -691,7 +687,8 @@ private extension FeedbinAccountDelegate {
 	func syncFeeds(_ account: Account, _ subscriptions: [FeedbinSubscription]?) {
 		
 		guard let subscriptions = subscriptions else { return }
-		
+		assert(Thread.isMainThread)
+
 		os_log(.debug, log: log, "Syncing feeds with %ld subscriptions.", subscriptions.count)
 		
 		let subFeedIds = subscriptions.map { String($0.feedID) }
@@ -701,9 +698,7 @@ private extension FeedbinAccountDelegate {
 			for folder in folders {
 				for feed in folder.topLevelFeeds {
 					if !subFeedIds.contains(feed.feedID) {
-						DispatchQueue.main.sync {
-							folder.removeFeed(feed)
-						}
+						folder.removeFeed(feed)
 					}
 				}
 			}
@@ -711,9 +706,7 @@ private extension FeedbinAccountDelegate {
 		
 		for feed in account.topLevelFeeds {
 			if !subFeedIds.contains(feed.feedID) {
-				DispatchQueue.main.sync {
-					account.removeFeed(feed)
-				}
+				account.removeFeed(feed)
 			}
 		}
 		
@@ -722,27 +715,24 @@ private extension FeedbinAccountDelegate {
 			
 			let subFeedId = String(subscription.feedID)
 			
-			DispatchQueue.main.sync {
-				if let feed = account.idToFeedDictionary[subFeedId] {
-					feed.name = subscription.name
-					// If the name has been changed on the server remove the locally edited name
-					feed.editedName = nil
-					feed.homePageURL = subscription.homePageURL
-					feed.subscriptionID = String(subscription.subscriptionID)
-				} else {
-					let feed = account.createFeed(with: subscription.name, url: subscription.url, feedID: subFeedId, homePageURL: subscription.homePageURL)
-					feed.subscriptionID = String(subscription.subscriptionID)
-					account.addFeed(feed)
-				}
+			if let feed = account.idToFeedDictionary[subFeedId] {
+				feed.name = subscription.name
+				// If the name has been changed on the server remove the locally edited name
+				feed.editedName = nil
+				feed.homePageURL = subscription.homePageURL
+				feed.subscriptionID = String(subscription.subscriptionID)
+			} else {
+				let feed = account.createFeed(with: subscription.name, url: subscription.url, feedID: subFeedId, homePageURL: subscription.homePageURL)
+				feed.subscriptionID = String(subscription.subscriptionID)
+				account.addFeed(feed)
 			}
-			
 		}
-		
 	}
 
 	func syncTaggings(_ account: Account, _ taggings: [FeedbinTagging]?) {
 		
 		guard let taggings = taggings else { return }
+		assert(Thread.isMainThread)
 
 		os_log(.debug, log: log, "Syncing taggings with %ld taggings.", taggings.count)
 		
@@ -776,11 +766,9 @@ private extension FeedbinAccountDelegate {
 			// Move any feeds not in the folder to the account
 			for feed in folder.topLevelFeeds {
 				if !taggingFeedIDs.contains(feed.feedID) {
-					DispatchQueue.main.sync {
-						folder.removeFeed(feed)
-						clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
-						account.addFeed(feed)
-					}
+					folder.removeFeed(feed)
+					clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
+					account.addFeed(feed)
 				}
 			}
 			
@@ -793,10 +781,8 @@ private extension FeedbinAccountDelegate {
 					guard let feed = account.idToFeedDictionary[taggingFeedID] else {
 						continue
 					}
-					DispatchQueue.main.sync {
-						saveFolderRelationship(for: feed, withFolderName: folderName, id: String(tagging.taggingID))
-						folder.addFeed(feed)
-					}
+					saveFolderRelationship(for: feed, withFolderName: folderName, id: String(tagging.taggingID))
+					folder.addFeed(feed)
 				}
 			}
 			
@@ -805,14 +791,11 @@ private extension FeedbinAccountDelegate {
 		let taggedFeedIDs = Set(taggings.map { String($0.feedID) })
 		
 		// Remove all feeds from the account container that have a tag
-		DispatchQueue.main.sync {
-			for feed in account.topLevelFeeds {
-				if taggedFeedIDs.contains(feed.feedID) {
-					account.removeFeed(feed)
-				}
+		for feed in account.topLevelFeeds {
+			if taggedFeedIDs.contains(feed.feedID) {
+				account.removeFeed(feed)
 			}
 		}
-
 	}
 	
 	func syncFavicons(_ account: Account, _ icons: [FeedbinIcon]?) {
@@ -826,14 +809,11 @@ private extension FeedbinAccountDelegate {
 		for feed in account.flattenedFeeds() {
 			for (key, value) in iconDict {
 				if feed.homePageURL?.contains(key) ?? false {
-					DispatchQueue.main.sync {
-						feed.faviconURL = value
-					}
+					feed.faviconURL = value
 					break
 				}
 			}
 		}
-
 	}
 	
 	
diff --git a/submodules/RSWeb b/submodules/RSWeb
index afcbd0819..b236f5762 160000
--- a/submodules/RSWeb
+++ b/submodules/RSWeb
@@ -1 +1 @@
-Subproject commit afcbd0819c85b263acc892361ed840a9628eba4d
+Subproject commit b236f57627cb8aa3feac835689754d4863eb1788