small bug in game analysis

In the following game the computer analysis summary says black made 1 blunder, but it actually labeled two moves as blunder. On top of that, the second such labeled move (#23) is clearly not a blunder - it has the same eval as the only other legal move.

I'm not seeing what you're seeing? labels and analysis seem to match, and move 23 isn't categorized as a blunder

@Patrizsche Interesting. I should have checked after I posted it. All I can say is that it does for me. Is there an easy way to post a picture? I guess you can just believe me. Based on your feedback I did some experimenting. I was originally looking at the game in Opera. I opened a new tab and looked at the analysis there and the bug still shows. I also tried looking at the game in Chrome, and there was no problem there.

More data: I went back to the second tab I opened on Opera and did a refresh on the tab. This caused the error to go away. Then I opened a third tab and the error did not appear.

Here is an image showing the double question mark on the board and in the move list: