Weird dot glitch at the end of pressure sensitive brush lines?

[KazutoDraws]

When I use the brush tool with pressure sensitivity enabled, and the end of the lines, a dot (varying in size) appears as part of the line. I have no idea how to fix this, because I've been using older versions of flash for years and only recently upgraded. 

Here's an example of this issue:

Thanks for any help in advanced.

[Preran]

I would begin with updating the graphic drivers on my device from the manufacturer's site. If you continue to face issues, I suggest getting in touch with our tech support team using this link https://adobe.ly/2WYE62m

Thanks,

Preran