Screen resolution 3840x2160

10

Had the same issue on my MacOS 15. I resolved it by manually editing Info.plist. It is not ideal (a bit blurry on Retina display but fine on larger external displays).

Steps to Manually Edit Info.plist:

  1. Locate the GanttProject Application:
  • Open Finder.
  • Navigate to where GanttProject is installed (e.g., in the /Applications folder).
  1. Show Package Contents:
  • Right-click on GanttProject.app and select Show Package Contents.
  • Go to the Contents folder.
  1. Open the Info.plist File:
  • Inside the Contents folder, find the Info.plist file.
  • Open it with a text editor (TextEdit or Xcode).
  1. Change the Value:
  • Locate this line:
<key>NSHighResolutionCapable</key>
  <string>true</string>
  • Replace both lines with:
<key>NSHighResolutionCapable</key>
<false/>
  1. Save the File:
  • Save your changes and close the file.
  1. Restart GanttProject:
  • Relaunch the app and check if the issue is resolved.

Note that this edit might have to be redone if you update the app.