I've been working with Photoshop for YEARS and have always used the spacebar/option to access the zoom tool. It's not working and I cannot, for the life of me, and hours of searching figure out how to get it to work again. Command + is NOT an efficient option.
Please let me know what got switched on or off that has made this frustrating change.
Do you mean Ctrl+Spacebar / Alt+Spacebar which on Mac would be Cmd+Spacebar /Alt+Spacebar ?
If so , it is still here and working on CC2018; CC2017 and CS6 - all on Windows