I never saw it for 1X2 and AHC too, but there was for example a bookmaker in the past, where in Formula 1 you could parlay odds for winner & Top3 market. When I told them, they never got back to me and didn't even fix it.
Well you did your part then and they are just careless
this has happened with me in another site where I reported a feature that can make players have frequent +EV bets , they said they will study it and get back to me
well they never replied back but they changed their ToS and made it that they have the right to cancel that feature for bettors whenever they want