I agree. Does the FizMig guide explain how to use this bug?:) If not, please tell me how to do it?:)
During the tactical phase, place your units, especially those you need to reach the target, on the desired cell. Then, press -A- (this will start the automatic deployment, and two-hex units will start moving one cell further). The important thing is to cancel the autobattle in time before the tactical phase ends, but after the unit you need has moved one cell further by pressing Esc. Otherwise, the computer will start its turn. If you don't have enough skill to cancel the automatic deployment in time on the fast animation, you can temporarily reduce it in the settings.