My browser / operating system: Windows NT 10.0, Chrome 119.0.0.0, No Flash versions detected
The brush tool doesn't work for me, I'm drawing the outline of different countries but sometimes two lines don't connect when they're the same colour, which means the fill tool doesn't work on them, I think this mostly happens when its touching another border that is a different colour. The only solution I know of right now is to draw it all in one take which for countries like Canada isn't going to work

Use the Group tool to group the lines together.

Then the paint bucket tool still doesn't work.