When I view my mashup, for some reason my line chart disappears whenever my values update. The line chart is supposed to update values but it is static. Not sure why. But, the main issue, is it disappears from view completely after a few updates.
What version of ThingWorx are you running? What browser are you using? Do you see the same behavior in other browsers?
This is the hosted trial 9.0. Google browser. I just set it to a fixed size instead of responsive and it stopped changing. I am not sure why it did that in responsive mode unless there was something hidden being added to the screen.
We have a number of issues affecting charts logged with R&D. Some of the defects are being resolved in 9.0.1 targeted for release on August 26.
Since you're running a trial version, you may have to install an on-premise version in order to get the upgrade, but you will need a support contract in order to download upgrades.