Forum "Authentication ticket mismatched" ?

[#1]

So I just visited this post - https://community.plus.net/t5/Everything-else/news-plus-net-or-lack-thereof/m-p/2015620 

The post and page rendered OK but had this unusual error banner across the top that I've not seen before !

[#2]

Strange, @outcast - I don't see the 'banner'.

[#3]

I did wonder whether the topic got moved by a moderator at the exact moment I clicked on the page, but there is no sign that.

FWIW the page has been OK since that first visit.

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