I installed and set Windows 98SE and Windows Me under DOSBox-X according to the manuals, however I can't make middle mouse button and mouse wheel to work in either system. I tried under both Linux Mint and Windows 10. I also tried options:

middle_unlock=none
mouse_emulation=never
mouse_wheel_key=0

And it didn't help.

Tried installing Intellimouse driver but nothing changed

Any suggestions? My mouse is Roccat Kone Pure Ultra if that is of any relevance.