I can reproduce when there are two similar directories and one has a single quote.
$ mkdir "aa'bb" $ mkdir "aardvark" $ cd aa\'<tab>
The single quote and slash disappear when Tab is pressed.
I can reproduce when there are two similar directories and one has a single quote.
$ mkdir "aa'bb"
$ mkdir "aardvark"
$ cd aa\'<tab>
The single quote and slash disappear when Tab is pressed.