Avoid infinite recursion when AnimationPlayer.current_animation is se…

…t to an empty string

scene/animation/animation_mixer.cpp

@@ -1538,6 +1538,12 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
 							Variant value = a->track_get_key_value(i, idx);
 							value = post_process_key_value(a, i, value, t->object_id);
 							Object *t_obj = ObjectDB::get_instance(t->object_id);
+							// Ignore if is an animation key that set AnimationPlayer.current_animation to an empty string 
+							// otherwise this will start an infinite recursion (see GH-98076).
+							AnimationPlayer *anim_player = Object::cast_to<AnimationPlayer>(t_obj);
+							if (anim_player && t->subpath.has("current_animation") && String(value).is_empty()) {
+								continue;
+							}
 							if (t_obj) {
 								t_obj->set_indexed(t->subpath, value);
 							}
@@ -1549,6 +1555,12 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
 								Variant value = a->track_get_key_value(i, F);
 								value = post_process_key_value(a, i, value, t->object_id);
 								Object *t_obj = ObjectDB::get_instance(t->object_id);
+								// Ignore if is an animation key that set AnimationPlayer.current_animation to an empty string 
+								// otherwise this will start an infinite recursion (see GH-98076).
+								AnimationPlayer *anim_player = Object::cast_to<AnimationPlayer>(t_obj);
+								if (anim_player && t->subpath.has("current_animation") && String(value).is_empty()) {
+									continue;
+								}
 								if (t_obj) {
 									t_obj->set_indexed(t->subpath, value);
 								}
@@ -1860,6 +1872,12 @@ void AnimationMixer::_blend_apply() {
 				}
 
 				Object *t_obj = ObjectDB::get_instance(t->object_id);
+				// Ignore if is an animation key that set AnimationPlayer.current_animation to an empty string 
+				// otherwise this will start an infinite recursion (see GH-98076).
+				AnimationPlayer *anim_player = Object::cast_to<AnimationPlayer>(t_obj);
+				if (anim_player && t->subpath.has("current_animation") && t->value.is_null()) {
+					continue;
+				}
 				if (t_obj) {
 					t_obj->set_indexed(t->subpath, Animation::cast_from_blendwise(t->value, t->init_value.get_type()));
 				}