
I just have an MX Ergo as mouse, so can’t test with another BT device. The Slim Combo is a great keyboard for that iPad, dito. The 2nd gen iPad Pro is still a great device, not obsolete at all, so it should have been considered as potential target. There’s no way someone in charged of testing could not have notice this, except if my config is exceptional in terms of number of occurrences, which I doubt.

To me, it has been badly tested on earlier devices. I’ve tried several times, and can repeat it every time. In the upper left of the window, click on the Mouse tab and then click on the button you would like to customize: Gesture button. Logitech G professional gaming mice are engineered to compete. I have to reboot my iPad and set assistive touch off to get it back as normal. Logitech G703 LIGHTSPEED Wireless Gaming Mouse with HERO 16K Sensor, LIGHTSYNC RGB, POWERPLAY Compatible. Setting the assistive touch on and within a few minutes my trackball get blocked (scrolling, all buttons but the left one), as well as my keyboard, which acts after that as trackpad (I can’t write a text anymore).

I have a 12.9” iPad Pro 2nd gen (2017), a Logitech slim Combo keyboard and a Logitech Ergo MX trackball (I can’t emphasize enough how this device is great - at least for me, of course). But don't worry we are here to help you simplify this puzzle.
HOW TO CUSTOMIZE MOUSE BUTTONS ON MAC HOW TO
This creates big confusion for the users on how to right-click on a MacBook.

And that's why it is very hard for the Windows users to get a hang of the one-button mouse. Unfortunately, it doesn’t work, at least not the advanced features, for me. Apple changed the mouse a long time ago and preferred using a one-button mouse. For your information, I’ve awaited the mouse support and have tested it as soon as iPadOs 13.4 was installed on my iPad.
