Strange Bug

[KojaK]

https://youtu.be/taKDEld3Fuo

Or a rule I dunno...

System: https://s16.directupload.net/images/190406/xwg39y9t.png

[KojaK]

Next Bug but srsly curios
Enemy got 2 Queens LOL

https://www.directupload.net/file/d/5415/5exy22b8_png.htm

[Mister Axiom]

Better late than never.
Your first post is no bug. It is the "en passant"-rule.
I do not know the english term for "en passant". But its desciption is as follows.

"In chess, capturing while passing is defined as the ability to move with a pawn to capture an opposing pawn even if the pawn moves from the starting position by a double step beyond the capturing area of your own pawn."

[Mister Axiom]

The second bug you posted is also no bug. It is possible to have more than one Queen.

"When a pawn reaches the opponent's back row, it must be replaced immediately by the desired piece. Since the selection is not limited to pieces that have already been captured, a player can, for example, come into possession of two or more queens."