Hey emranemranx,
thank you for your kind response. I followed all of your advices, but still I can reproduce the problem.
Would you mind to try it one more time on your end? Please try to move the cursor directly from one dropdown area to the neighbored dropdown area (-> Please do not navigate by using the menu itself – instead hold the cursor in the area of the dropdown menu below the actual menu). This should make the problem visible to you as well.
Thank you and kind regards!