Tag excerpt inconsistently displayed

Question

Here is the state of the tag usage as I wrote this question:

On the the tags page, usage appears with the first seven words of the excerpt truncated, rendering it mostly useless:

Furthermore, the tag popup shows an outdated version of the except, containing the redundant "Questions concerning", which I removed yesterday:

Answer 1

Temporary invalid popup was a caching bug (fixed - to be deployed later)

Currently this is the regex that we use for shortening:

       @"^.{0,40}?
            (
            (this\stag\s(is)?\s?)  # this tag .. this tag is|about ...
            |
            (used\sto\s)           # this tag is used to ...
            |
            (the\s[^\s]+\stag\s)   # the {foo} tag ...
            |
            (the\stag\s[^\s]+)     # the tag {foo} ...
            |
            (\s(is|are)\s)         # blah blah blah is|are ...
            )"

are is hitting in the first 40 chars, so its dropping stuff before it. Can you rephrase it so this filter does not hit?