Rig's web server's SGV and graph are mangled
Using G5, running the latest dev branch commits, the web server on the device shows the following display:

The loop is running properly and Nightscout looks as expected.
I see similar issues on 0.7.0-dev (including "BG NaN").
Seeing similar issues here on 0.6.1:
Subsequent refreshes, sometimes fixes the issue as it looks like below:
But a refresh afterwards around 5 min later returns dud data again:

I got this on Dev

I'm on dev, but I know I'm not seeing quite the detail in here that others are displaying. Above I see that there are entries for boluses, for example, but I've never seen those. Just updated the rig to the latest commit and things are still looking off:

Screenshot is Edge, but Firefox and Chrome look the same.
I'm getting the NaN issue on my phone (Safari and Chrome), but not on my PC (Chrome). I'm using 0.7.0-dev with Logger.
I don't think this was tested prominently with the latest release (master is now 0.7.0); just noting that here in case someone wants to use that as a motivation to tackle reviewing & improving the offline web server since it's not widely used.