There are several solutions to this situation.

Activate Auto Scale Ribbon Icons According to DPI Feature

  • Click on the Preferences icon in the Settings tab .

  • In the preferences dialog that opens, activate the "Auto scale ribbon icons according to DPI" feature by checking.

  • Restart the program.

Change the Zoom Settings

You can change the zoom settings.
The problem will disappear if you use 125% - 150% of the recommended zoom ratio for 4k in your screen settings while the ribbon menu is active in the program. You can follow the steps below in Windows 8 and 10.

  • Click on the desktop with the right mouse button. Click the Display Settings line from the drop-down list.

  • The Monitor Settings dialog will open. Scale using one of the 125% - 150% options in the scale and layout section.

Windows 10:

Windows 8:

Override High DPI Scaling Behavior

  • Select the program in the installation file and click the right mouse button. Click on the properties row from the drop-down list.

  • In the dialog that opens, switch to the Compatibility tab. Click the Change high DPI settings button.

  • In the DPI settings dialog that opens, enable the "Override high DPI scaling behavior" feature.

  • Select System as the scaling by .

  • Close the dialogs by clicking the OK buttons.