I use a Logitech Keyboard + Mouse combination.
There comes a software with which you can configure many buttons and the mouse wheel.
I have not used this until now because the mouse wheel's default set is "zoom", "zoom" was always more important to me than "middle mouse button".
For a test, I have now configured the mouse wheel as a "middle mouse button" and huh..., it works. I can rotate the map and the zoom works too.
Thanks for jumping in for assistance.
By the way, in my research on the solution, I've found this issue is not uncommon. Nowhere I found a commentary or an assistance from the developers - embarrassing.