If you miss this function, you can get it back now. You may need to tweak a couple of settings if you want it to work exactly as it did, since that keystroke is already bound to the autopilot. According to the release notes, you can either kill that binding, or disable the shortcut in the mod's ini file. It also adds a toolbar button at the top of the screen, so you don't have to use the keystroke.

https://flightsim.to/file/16358/shift-z-stats

Edit: Delete the shortcut that comes in the pack to the userconfig file. The real one is in ambitiouspilots-shiftzstats\html_ui\Data - I just created a real shortcut to that inside the main folder.