After I installed the Gimp on my machine running Windows 10 Enterprise, submenus such as the 'tool options' are shown with Greek characters (as far as I can tell the words are English):
I had first installed it with Chocolatey, which can be considered non-standard, and instead I then used the installer from gimp.org directly.
Gimp still shows the Greek characters, so I guess this is related to my system setup. The clock in the taskbar also has a square as the hour-minute separator, so something is not right. Has anyone else come across this? And is there a solution, e.g., installing more fonts?