I wanted to locate this answer of mine and I remember that I have cited a Sanskrit verse "द्वा सुपर्णा...." (see the first quote in the answer) and hence I entered that string in search bar but it is found that search function is not working as expected with Devanagari script.
If I just search the string without applying any operator like
is:a then it is working; Try this
You'll find that Devanagari script is broken but still search is working
If I add
is:a then it doesn't give any result. Try it:
Same problem prevails for
user:277 query, Try that
So, I think something gets wrong with Devanagari script while adding operator to the search function.
Why is it working for MSE but not for HSE?
After editing, it stopped working for MSE also.
I am investigating this further.