Cannot use ‘CSS’ in post title

Disable all plugins. One of them puts all words with capital letters in a <span class="caps"> container. In 

<meta property="og:title" content="test <span class="caps">CSS</span> title" />

… this closes the <head> section automatically because output is not allowed in <head>.

If you have found the plugin tell its author about the Bug. I’m sure s/he wants to know about this.

Parsed code in Opera’s debugger:

Parsed code in Opera’s debugger

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