wp-comments-post.php blank white page after upgrading to wordpress 4.4

HI

was wondering if anybody has a fuix for the shop theme wp-comments-post.php blank white page after upgrading to wordpress 4.4? When i try to submit a comment using the shop theme ONLY after upgrading to wordrpress 4.4 the comments do NOT work after i hit “Submit Comment” button im sent back to page wp-comments-post.php which just appears blank white page.

I disabled the shop theme and enabled twenty sixteen and try the comments again, this time it works perfectly… this can be tested at https://www.007aj.com/example/074/ by either trying to comment on any of the products or leave a comment on any of the posts.

thank you for your time

p.s i try to do a fresh install, i also got a new copy of wp-comments-post.php to make sure it was no corrupt but neither action fixed the problem.