when working on a document word count doesnt return any info unless you select all.
And what is your version?
I have no problem with 5.2 and Linux Mint 17.3. I can view the word count either:
(1) on the Status Bar ( View > Status Bar) to turn it on or off.
(2) File > Properties > Statistics.
(3) Tools > Word Count
Which options are you using, with what version and operating system?
5.1.4.2 works fine on Windows 10.