Hi, just a quick thought but one solution might be to pause JavaScript in Chrome, when calendar is open - this will freeze it in place (hopefully) and allow use of inspect element or other tool:
- Open the Sources panel in Developer Tools ( Ctrl+Shift+I ).
- Click the Pause button to Pause script execution .
See a previous reply of mine which was prompted by an annoying calendar!
[How To] Use The Browser Developer Tools (F12 DevTools)