Since the version of IRONCAD 2022, the display operation of the hidden edge of the part has changed.
Older versions (and earlier IRONCAD 2021) return to the original part state by pressing the Ctrl + E key twice.
IRONCAD 2022 has added an operation to hide the edges of a part during the operation from displaying the hidden edge back to its original state.
Ctrl + E key operation for the first time
Displays hidden edge display.
Ctrl + E key operation for the second time
Hide hidden edges and edges of parts.
Ctrl + E key operation for the third time
Hide the hidden edge and display the edge of the part (original part state).
For more information, please refer to the video below.