So that first screenshot is a folder? It has a "Print" item at the top which I don't think I've ever seen on a folder before (unless it's been added by something).
Haven't checked Opus 12 but so far I can't reproduce any issues in Opus 13, with files or folders.
Things that could be a factor:
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Mixed DPI. If there are multiple monitors in different DPIs, or DPI has changed since the last reboot, it can complicate things, especially with pop-up menus and even more so if they're on the same screen as the taskbar or a similar docked toolbar.
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Tools that move/resize/on-top windows, add things to their titlebars or change window border appearance. Those can cause weird issues sometimes, and might be throwing off the menu vs screen size calculation in some way.
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Screen resolution, DPI and font choices may be a factor, if it only happens when the menu is only over by, say, 1/4 of a line or something like that. Maybe it's always more or less than that for me. I can try the same ones you're using if you list them.
Avoiding the issue entirely by de-cluttering the menu is another option: Tip: Organise and Speed-Up Context Menus