Yes, and I had someone else confirm them too.
There are three bugs here, all due to the search feature in the PM inbox. They are as follows:
1) When you search for something, you cannot go to page 2 (or onwards) of your results. Enter a username, and then try to go to page 2 of the results (assuming you have enough results). You will see the following page:
2) The "query" URL when searching seems bugged, in two ways. In this case, I am searching my PMs for Extreme Newbie. The following happens:
a) The URL becomes:
It should be:
This just changed in the past 24 hours. While I was testing the other two bugs, the correct URL was showing, but tonight, it isn't.
b) When trying to enter one of the PMs, I get this page:
I got this page both last night, and tonight. HOWEVER, it only occurs when the username has a space in it. So entering a PM with the search query as "Extreme Newbie" gives this bug, but "zodac" does not.
For part 1), I expect to be able to go to another page of results.
For 2(a), the URL should show what I entered as my search.
For 2(b), you should be able to go into PMs while using multiple words to search.
For 2(a) it seems to just mask the query with a random jumble of letters. It's certainly a mask though, since for part 2 (b), I'm only seeing bugs with queries with multiple words them, not single words. So while searching "Extreme Newbie" and "zodac" will both give random characters as the URL, only the former will cause the bug in 2(b).
PMing me might be handy for this bug; I don't think I've explained it particularly well...