Hello just a note I discovered also that any smal melee weapons has to not only be placed in hands but must also be required to press space bar after to actually be in attack mode where is axe typically can automatically go into attack mode by left click on mouse when in hands.

Baseball bat aswell.

Hit a zed 15-20 times yesterday (heard the hit sounds), he didn't die.
Tried with attack mode (spacebar) and without.

screwdriver doesnt appear to work either

The hammer is completely unable to hit anything from the few times I've used it. Other weapons all tested out okay for me (Bat, Both Axes, Shovel, Screwdriver, and Fists).

I also have found this to be the case. was toe to toe with a zombie, swinging away with crowbar, and no hits registered. I am not sure if i had pressed spacebar to be in attack mode or not, but if I can swing, it should register, or i should not be able to swing if not in attack mode.

All of the melee weapons mentioned in this thread now work and do damage.

Hello Instynct and thank you for the report.
Unfortunately we were unable to reproduce the issue you have described. Please retest on latest build and report back to us in case the issue re-appears.
Regards,
Geez