For now, I do not include index, category, newproducts, and manufacture in full page cache. (Note: This is TB 1.0.4 - using php 7.1). happens on Chrome on my android and on safari on my Iphone. Have not tried on other cell phones yet.
Please try it on your own site. My site is already in production mode.
The issue with regards to full page cache is even more serious with TB 1.0.5 . The product page shows this 500 server error on desktop across browsers when product ie enabled on full page cache.
I don't think I see those issues on TB 1.0.3