Why Can't SoloLearn Offer a Decent Console Emulator (Code Playground)?

Question

Seriously, I run cpp or py apps and a popup tells me this code requires input. It doesn't do this for each input, it doesn't do this at any point but start, and it fails to even show the correct prompt in the case of "input" calls. On the other hand, web stuff looks pretty and runs smooth as a baby's arse. Why can't the SL servers run a decent console? 80x24 would rock but just something that works decently will do. Are there server concerns? Then make the interpreter(s)/emulation client-side.