Correctly handle changing of global save path

src/base/bittorrent/session.cpp

@@ -2525,18 +2525,27 @@ void Session::setSavePath(const Path &path)
     if (newPath == m_savePath)
         return;
 
-    m_savePath = newPath;
-
     if (isDisableAutoTMMWhenDefaultSavePathChanged())
     {
+        QSet<QString> affectedCatogories {{}}; // includes default (unnamed) category
+        for (auto it = m_categories.cbegin(); it != m_categories.cend(); ++it)
+        {
+            const QString &categoryName = it.key();
+            const CategoryOptions &categoryOptions = it.value();
+            if (categoryOptions.savePath.isRelative())
+                affectedCatogories.insert(categoryName);
+        }
+
         for (TorrentImpl *const torrent : asConst(m_torrents))
-            torrent->setAutoTMMEnabled(false);
-    }
-    else
-    {
-        for (TorrentImpl *const torrent : asConst(m_torrents))
-            torrent->handleCategoryOptionsChanged();
+        {
+            if (affectedCatogories.contains(torrent->category()))
+                torrent->setAutoTMMEnabled(false);
+        }
     }
+
+    m_savePath = newPath;
+    for (TorrentImpl *const torrent : asConst(m_torrents))
+        torrent->handleCategoryOptionsChanged();
 }
 
 void Session::setDownloadPath(const Path &path)