Hair children not removing from particles. Where am i going wrong?

Hey there, i’m still new to blender and am taking a course that hasnt fully updated to 2.8 yet, but ive been stuck trying to work this out for hours now and am having no luck. I uploaded a screen recording to youtube in the link to demonstrate the issue. Basically just trying to remove some hair from the model but cant get the children particles to leave with the parents. Any ideas, tips, resource links or tutorials for this kind of thing are appreciated! Thanks guys!

Rewind, you may be looking at old cache data…?

This was a bug, fixed
Please try a fresh build from