I asked a question earlier in [The cursor disappears], but the question was different, so
I will ask you a question again.

The OS of the personal computer is Win7, and DraftSight 2020 SP4 is used.
I can operate without any problem until I select print.
If I select print, I will not be able to operate in MODEL.
Even if I cancel printing in the middle, I cannot operate in MODEL.
When I switch the MODEL sheet, all the displays disappear.
Nothing is displayed even if the MODEL sheet is restored.

Once it becomes inoperable, it will not recover unless Draftsight is restarted.

It is the same even if I uninstall and reinstall DraftSight.
It was the same when I moved to the "C: \\ Users \\ [USERNAME] \\ AppData \\ Roaming \\" folder and created new DraftSight data with the name of DraftSight as DraftSight_OLD.

Can anyone please tell me the solution?