Hexo Math formula could not display in the right way

[congchan]

Environment Info

Node version(node -v): v6.0.0

Your site _config.yml (Optional):

Your theme _config.yml (Optional):

Hexo and Plugin version(npm ls --depth 0):
+-- hexo@3.7.1
+-- hexo-deployer-git@0.3.1
+-- hexo-generator-archive@0.1.5
+-- hexo-generator-baidu-sitemap@0.1.5
+-- hexo-generator-category@0.1.3
+-- hexo-generator-feed@1.2.2
+-- hexo-generator-index@0.2.1
+-- hexo-generator-searchdb@1.0.8
+-- hexo-generator-seo-friendly-sitemap@0.0.21
+-- hexo-generator-sitemap@1.2.0
+-- hexo-generator-tag@0.2.0
+-- hexo-inject@1.0.0
+-- hexo-math@3.0.4
+-- hexo-renderer-ejs@0.3.1
+-- hexo-renderer-marked@0.3.2
+-- hexo-renderer-stylus@0.3.3
+-- hexo-server@0.2.2
+-- hexo-symbols-count-time@0.4.4
+-- hexo-wordcount@3.0.2
`-- save@2.3.2

For BUG

Hi, previously there is no such issue, for old pages which were once fine now becomes buggy. Thanks.

1. BUG description
   The Math formula seems ok when the pages are loading, however after loading completed, it turns out to be a mess, all the digits displayed as squares.
   http://shukebeta.me/UoE-st/#System-Reliability
2. The way to reproduce
   Open the link, wait and see the formula crahes

For question

For feature request

[yoshinorin]

Same as #3279

@congchan

I checked your site using by Chrome. A mathjax font are blocked by CORS policy.
You can see error message using by browser developer tool (I used chrome dev tool.)

Please try to change CDN to official recommended CDN.
I think this problem caused by redirect bootcss CDN to cloudflare CDN.