Further convinced to go back to FF, darn it after an update and a reboot one hour ago, ctrl+space no longer works with chrome(which worked in the last few years

Further convinced to go back to FF, darn it after an update and a reboot one hour ago, ctrl+space no longer works with chrome(which worked in the last few years) but it works the same way with anything else, yesterday it's that youtube brought my PC to grinding halt when it's used with crhome(firefox works fine), what's going on Google???