A bug in the opening explorer

I was using the opening explorer and I imported a PGN (It was a game I had just lost by checkmate), and the last moves in the line were
40. a4 Bxa4 41. b5 a3 42. Rc8#
Black resigned - White is victorious

Here is the link to the game, go to FEN & PGN tab, just take the PGN, copy it, and paste it into the opening explorer and click import.

I don't see anything that is wrong. What exactly is the problem?

@XNA40 said in #1:

I was using the opening explorer and I imported a PGN (It was a game I had just lost by checkmate), and the last moves in the line were
40. a4 Bxa4 41. b5 a3 42. Rc8#
Black resigned - White is victorious

Here is the link to the game, go to FEN & PGN tab, just take the PGN, copy it, and paste it into the opening explorer and click import.
It's wriiten CheskMate– White Victorious

@ChezzWizard2 said in #2:

I don't see anything that is wrong. What exactly is the problem?

40. a4 Bxa4 41. b5 a3 42. Rc8#
    Black resigned - White is victorious
    I don't think you can lose by checkmate and resignation at the same time

It's wriiten CheskMate– White Victorious
Did you import the PGN to a new opening explorer tab?

However, if you close the tab and reopen it by ctrl+shift+t (at least on windows), it looks normal.
Note: you have to click import PGN again but do not have to paste it again.