Shift Selections in Mixer Inputs not working

Since V10, Selecting multiple channels in the desk and holding shift while assigning the first input no longer auto fills the rest sequentially.

Shouldn’t it be Shift+Alt?

Macs dont have an alt - but the equivalent Option makes all the channels the same number. Until V10 - you held down shift only and the input numbers would populate in ascending order.

Correct. On PC, Shift + Cntrl assigns all selected tracks to the same In or Out. Shift alone assigns sequentially up from In or Out selected.

Sequential selection is working as expected here on Windows 7 and N 10.1.0.

You have to press Shift after you open the selection dialog.