Post a screenshot showing the problem.
 
By any chance is the rounded item a solid such as dichlor or trichlor…..and likely ounces? If so there is a known hiccup where it’s being saved as the correct amount but rounded when it’s not necessarily ideal. We’ve got this noted for a future fix if this is the hiccup you’re referring to 👍
 
Glad I saw this thread. I came to start my own about the same issue.

I can add 0.5oz dichlor to my spa and then when I view "Timeline" it rounds it up to show that I added 1oz dichlor.

No biggie, just a little bug.

Thanks for the service & support!