Reset the buffer size, forgot to restore that to its intended size as 4 seems a bit small.

src/tstring.c

@@ -96,7 +96,7 @@ void TStringRemoveRange(int startIndex, int count, TString* string) {
     if (startIndex < 0 || startIndex > string->Length) return;
     if (count <= 0 || count > string->Length - startIndex) return;
 
-    char buffer[4] = { 0 };
+    char buffer[256] = { 0 };
     unsigned int startByte = 0;
     unsigned int glyphCount = 0;