I am using the mate-desktop. The screenshot window opens, but when attempting to save the screenshot or copy the screenshot to the clipboard, it hangs. If it is ...

Almost always, the last column or two of pixels on the units label is missing (e.g. the z in Mhz is missing the right side). Somewhat less often, more or all the the units label is missing entirely; ...

Desktop Mate itself is a free app, but Yuzuki Yukari and Tsubasa Akari are available as paid DLC at the link above. After purchasing the DLC, launch Desktop Mate, right-click on the default character, ...