Your context menu is the largest I have ever seen, with 38 items out of which 17
are added by various installed applications.
On the other hand, while your primary monitor is large, your secondary monitor
is extremely small.
For these reasons the context menu does not fit on the secondary monitor.
The problem of scrolling can be a new Windows bug, but can also be created by
some installed application.
This can be verified by booting in Safe mode. If the problem disappears,
then this is caused by an application, and you may use
the free
Autoruns
to disable/re-enable startup items until you locate the problem.
If Safe mode disables the display driver, when it is also third-party,
you could instead try a selective
clean boot,
disabling only system services that have no connection to display.
If the problem continues in Safe mode, this is a Windows bug.
You may report it to Microsoft using the Feedback Hub, but the only real solution
will be to reduce the size of the context menu by disabling rarely needed
entries.
The best way, if the product supports it, is to go into a product's
Settings/Preferences and disable that option for the context menu.
If the product does not support such an option, you may still force the issue.
You may use here again Autoruns to disable entries from the "Explorer" tab.
You may also find many other such free context-menu editors in the article
Best Free Context Menu Extensions list.