In most other sotware, CTRL+ zooms in and CTRL- zooms out. The slider in LibreOffice is awesome, but would be more so if it responded to these conventions.
As this is an enhancement request, I'm changing Severity accordingly.
One could think of the possibility to use the keyboard for manipulating the Zoom slider in the status bar. But if it's a good idea to change the default meaning of Ctrl++/- shortcuts, I don't know, UX people might know better.
See Bug 45705 for workaround
*** Bug 59617 has been marked as a duplicate of this bug. ***
*** This bug has been marked as a duplicate of bug 45705 ***