Figured out the crash, but want to see what valgrind would say.

tools/animator.cpp

@@ -312,12 +312,12 @@ int error_usage() {
 }
 
 int main(int argc, char* argv[]) {
-  shaders::init();
+  ai::init("ai");
+  animation::init();
   components::init();
   sfml::Backend backend;
   guecs::init(&backend);
-  ai::init("ai");
-  animation::init();
+  shaders::init();
 
   std::string sprite_name;
   std::string background;

tools/arena.cpp

@@ -50,13 +50,14 @@ int main(int, char*[]) {
   dbc::check(main->$world == world, "GameDB::current_world doesn't match boss fight world.");
 
   while(!main->in_state(boss::State::END)) {
+    main->$ui.$arena.tick();
+    main->render(window);
+
     if(main->handle_keyboard_mouse() ||
       main->handle_world_events())
     {
       return 0;
     }
-
-    main->render(window);
     window.display();
   }