Overlapped, shifted and reversed annotation

i am using chromebook and an active stylus to edit pdf on kami. the problem is that everytime my annotations are overlapped and more seriously they are completely shifted. moreover, as you can see in the second picture, some of my deleted annotations reappeared, such as the triangle and arrows. i have to erase them all and write again which is really inconvenience and time consuming.

please fix this bug, thank you Kami team!Screenshot 2022-04-04 10.44.26
Screenshot 2022-04-04 10.44.04