From 6a5753fac8bfd6a60dd3e5fa0b44815df3e2bcdb Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Mon, 31 Oct 2022 17:45:36 -0400
Subject: [PATCH] Fix crash when tapping Load More button with Disable Infinite
 Scrolling

---
 Tusker/TimelineLikeController.swift | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Tusker/TimelineLikeController.swift b/Tusker/TimelineLikeController.swift
index 523bc58d..3e41bdb7 100644
--- a/Tusker/TimelineLikeController.swift
+++ b/Tusker/TimelineLikeController.swift
@@ -96,7 +96,11 @@ actor TimelineLikeController<Item> {
             return
         }
         let token = LoadAttemptToken()
-        guard await delegate.canLoadOlder() else {
+        guard await delegate.canLoadOlder(),
+              // Make sure we're still in the idle state before continuing on, since that may have chnaged while waiting for user input.
+              // If the load more cell appears, then the users scrolls up and back down, the VC may kick off a second loadOlder task
+              // but we only want one to proceed. The actor prevents a data race, and this prevents multiple simultaneousl loadOlder tasks from running.
+              state == .idle else {
             return
         }
         state = .loadingOlder(token, hasAddedLoadingIndicator: false)