This must be a bug. In Windows, the standard scroll-wheel zoom key is Ctrl. Pretty much everything follows this standard, including ALL web browsers, Word, Explorer, even ADOBE Reader,ACROBAT, and Bluebeam REVU. Except Adobe Creative Cloud software (Illustrator, Photoshop, InDesign, etc.). It uses the Alt key instead. This inconsistancing slows down production and needs to be changed
If this is not a bug, this should at least be an option to reverse the ALT and Ctrl keys in the preferences.
NOTE: Simply Going to :Edit > Preferences > Tools > Check the item "Zoom with Scroll Wheel"
Allows Zooming without ALT or Ctrl, but now you can only scroll vertiacally and not horizontally.