diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index ab7910cfae..d507fe8003 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -32,6 +32,7 @@
 - Fix: [#20484] Console caret not properly updated when using command history.
 - Fix: [#20543] Crash using show segments height from debug paint options.
 - Fix: [#20607] Infinite loop when renaming rides with default names longer than 32 bytes.
+- Fix: [#20642] Track list is sometimes empty due to uninitialized data for the filter string.
 
 0.4.5 (2023-05-08)
 ------------------------------------------------------------------------
diff --git a/src/openrct2-ui/windows/TrackList.cpp b/src/openrct2-ui/windows/TrackList.cpp
index 1f52565fa7..79c094436c 100644
--- a/src/openrct2-ui/windows/TrackList.cpp
+++ b/src/openrct2-ui/windows/TrackList.cpp
@@ -73,7 +73,7 @@ class TrackListWindow final : public Window
 {
 private:
     std::vector<TrackDesignFileRef> _trackDesigns;
-    utf8 _filterString[USER_STRING_MAX_LENGTH];
+    utf8 _filterString[USER_STRING_MAX_LENGTH]{};
     std::vector<uint16_t> _filteredTrackIds;
     uint16_t _loadedTrackDesignIndex;
     std::unique_ptr<TrackDesign> _loadedTrackDesign;