On a multilingual site (with English as default) the Flag ajax link produces no effect if Account administration pages on the top of the list in Interface text language detection is enabled.
1. Create a flag on a multilingual site.
2. Enable the Flag in Ajax mode on Full content view. Flagging / unflagging works as expected.
3. Now under Regional and language > Languages > Detection and selection, under the Interface text language detection table check the Account administration pages.
4. Return to full page view of any node. Flagging/unflagging does not work with the Ajax link (neither on the regular node page, nor when the link is provided through a views block).
5. Uncheck the Account administration pages checkbox, everything works as expected again.
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Flag core
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