With zsh-5.0.5-9.3.1, if autocd is set (which appears to be the default), then
paths will mask binaries in the PATH with the same name.

Example (with empty .zshrc):
1. mkdir mount
2. rehash # autocd will not pick up on this unless it's there when you start
zsh
3. mount
One might expect that the above would run "mount", but actually it cds to the
mount directory.

This behavior differs from zsh-5.0.5-8.21, vanilla 5.0.5, and 5.5.1.  Further,
it is contrary to the description of the option in the manual (see
http://zsh.sourceforge.net/Doc/Release/Options.html#Changing-Directories). 
I.e., it seems to be an openSUSE bug, introduced with the last update. 
unsetopt autocd is a workaround.  Curiously, if one unsets+sets autocd, the bug
disappears until a rehash is triggered.