### Godot version

4.0.dev(0810ecaafdbee3ea747219e6ab3a8de5d2216a09)

### System information

any

### Issue description

https://user-images.githubusercontent.com/61938263/215898051-8506b45e-a9d4-4c3f-b1b3-28f202dea67b.mp4



### Steps to reproduce

Editt AnimationBlendTree

### Minimal reproduction project

N/A
return zoom;
}
void GraphEdit::set_zoom_step(float p_zoom_step) {
	p_zoom_step = abs(p_zoom_step);
	ERR_FAIL_COND(!isfinite(p_zoom_step));
	if (zoom_step == p_zoom_step) {
		return;
	}
	zoom_step = p_zoom_step;
	panner->set_scroll_zoom_factor(zoom_step);
}
float GraphEdit::get_zoom_step() const {
	return zoom_step;
}
void GraphEdit::set_zoom_min(float p_zoom_min) {
	ERR_FAIL_COND_MSG(p_zoom_min > zoom_max, "Cannot set min zoom level greater than max zoom level.");
	if (zoom_min == p_zoom_min) {
		return;
	}
	zoom_min = p_zoom_min;
	set_zoom(zoom);
}
float GraphEdit::get_zoom_min() const {