Charts on non-active tab do not load/display - Firefox only

Hello,

My charts display fine when using Safari or Chrome, but not on Firefox.

I have the charts divided onto separate tabs. On page load the charts on the open tab display fine, but not the charts on the non-active tabs. If I change tabs then click refresh the charts appear.

http://sanibelrealestateguide.com/island-market-report/

This problem is exclusive to zoho reports on my site. The tabs load fine with other types of content:

http://sanibelrealestateguide.com/sanibel-captiva-recent-home-listings/

Thanks in advance for your assistance.