It is observed that few of the issues are resolved by resetting DraftSight to its default settings.

The steps to restore DraftSight to its default settings in Mac OS is as below:

• Close DraftSight.
• Go to Home/Library/Preferences/DraftSight.
• Rename the folder that is most recent (x.x.xxx). This folder contains the profile folder with current settings. (If in confusion, you can directly rename the DraftSight folder).
• Start DraftSight.
• Since it does not find the profile folder, it creates a new folder with default settings.

Sometimes,  complete un-install of DraftSight and re-install is required in order to resolve the issue. Hence, if Technical support advices you to complete un-install DraftSight on Mac OS and re-install, following steps can be useful.

• Login as administrator.
• Close DraftSight.
• Go to Applications.
• Right-click on DraftSight and Move to Trash.
  In addition to that, you are required to remove files present in ~/Library folder corresponding to DraftSight to completely uninstall DraftSight.
• Go to Home /Library/Preferences. Delete DraftSight folder.
  (Additionally, few applications are available for Mac OS, which completely uninstalls applications from Mac OS.)
• Re-install DraftSight.

 Note: please note that both the above processes will make you lose the customizations, if any done earlier.