Something odd about how \* tags are sorted

Tags starting with "\" (like \o/) are getting sorted to somewhere between L and R on the taglists of posts (like, say, post #393148), and I don't know why.

I remember it always being like that, although I may be wrong. Either way, it's weird.

Tag list ignores punctuation, it's been that for a little over a year. From the tag listing search:

nyx
(n’ω’`)っ)))д`)
o
;o
:o
/o
.o
\(^o^)/
\o/
o/
o157