I implemented the standard ILS process.When I try to turn on landing light, I find it invalid and the mouse will get stuck.Then I tried to down the landing gear and found that mouse clicking was useless and pressing G on keyboard was useless.Ventually had to crash.
I want to know why
Everything is in accordance with the procedure.
The only conceivable possibility is that there is too much fuel on the plane (about 20 tons)