bug in zugzwang practice exercice

hi, I absolutly love lichess and the way this site is so good and free, so thanks for that, today I'll try to contribute too ! :)

There is a bug in the first zugzwang exercice there is plenty of mate in 2 that are not regognize as good moves by the engine (for example 1. Ra2 1. Ra3, 1. Ra4 etc...)

have a good evening,

Avo-k

EDIT : the moves are bad but the engine plays badly too, allowing mate in 2....

There is only one mate in two. You have to go 1.Ra6 otherwise black plays 1...a6.

exept black does not play 1. ... a6
it plays 1. ... Bc7 in every case, allowing mate in two