I am using the trial version of CorelDraw 2021 for experiment, when I click ctrl+left mouse button to move an object x,z with the mouse, the object moves upright randomly? So what happened?! It was working fine in the 2020 version.
Strange.Both Ctrl+left button and Shift+left button dragging work as expected here, both constrain to vertical or horizontal movement only.
Thank you Ronny for your reaction, so it might be the trial version of CDR2021 that has this issue.