I really think the paint bucket tool should have its own options when inside a symbol to allow to fill:
strokes that cross over strokes that don’t lead to a anchor.
to fill in gaps automatically like adobe animate 2022 does. It will detect gaps and connect them automatically.
to fill objects, and then allow that stroke to be deleted so its lineless, like if you wanted to manually put in shadows.
I do love this program far more than illustrator though, so i have more praise to give then complaint. but i do find this annoying.