A short duration after drawing a correct stroke, all ink on the paper gets cleared. This means that if I draw another stroke immediately after, only about half of it gets saved into the paper.
Thanks for the report. I'll need more information about this before can I look into it:
What device and what OS version (or browser version, if it's not the app) are you using?
Can you provide a video? That'll make it easiest to go after the issue. If you cannot or so not want to post it here, you can send it to me by tapping the mail icon next to my name on this post.