> When keyboard moves is enabled, you're supposed to enter promotion choices with the keyboard (a8=n)
Unexpected disappearance of the selector aside, I'd just like to point out a little-known rule in the FIDE laws for those who might enjoy keyboard input, and not know this already with reference to notation for promotions:
The = is not required in algebraic notation for promotions!
Wikipedia says = is used in PGN, but is not FIDE standard (
en.wikipedia.org/wiki/Algebraic_notation_(chess)#Pawn_promotion) and they're correct - this is what Appendix C.11 in the "Fide Laws of Chess taking effect from 1 January 2018" says:
"C.11 In the case of the promotion of a pawn, the actual pawn move is indicated, followed immediately by the abbreviation of the new piece. Examples: d8Q, exf8N, b1B, g1R." (
www.fide.com/component/handbook/?id=208&view=article)
It turns out that keyboard input in Lichess does actually support FIDE's notation - a8n will indeed underpromote to a knight and the equal sign is not necessary.