Hello!
First of all: I love Garmin Connect and I use is quite extensively.
One of the features I use is weight tracking by manual entry.
Unfortunately the graph shows lower value than entered (what may boost one's mood but I would prefer the truth LOL).
The inaccuracy is not very significant however visible. For example 192.9 lbs is charted at around 192.3 lbs.
The workaround is to refresh the page and graph corrects itself.
I can provide screenshots if needed.
Browser: Chrome
OS: Windows 7/Linux
Appreciate if you can look into it,
Irek