Tons of Bugs with Apple Pencil

PLEASE resolve this. Often when I try to go back the second to last thing I wrote will disappear rather than the last thing. In addition, sometimes what I already wrote will randomly switch to the color I am currently writing in. Also, sometimes a line just appears across the screen for no apparent reason. This is so annoying and honestly ruining this app for me.

Charlotte Berry about Notability: Smarter AI Notes, v6.4.1