I made a substitution after the red card. but players still on the pitch after substitution.
some screenshots and pkm file attached.
also i upload save game as Martin Eden - Shrewsbury.fm
Southampton v Shrewsbury.pkm
at home matches adboards show only "football manager 2008" (yes i'm playing fm 2020)
there is no custom adboard.
also save game available as martin eden shrewsbury at owncloud
Shrewsbury v Leicester.pkm