I have also experienced this issue. The specific issues seems to be when the ui scaling different. I have a laptop with a 4k display with a scaling of 225%. The external monitor i am using is a 1080p monitor running 100% scaling. It seems that when hovering over the drawing area the cursor is using the scaling from the primary monitor, rather than for the external monitor. This then gives the effect of the cursor changing size when moving between the drawing space and the toolbars.
Changing the ui scaling on the primary display to 100% resolved the issue.
However using 100% scaling on a 4k laptop display is not usable.
This is an issue exclusive to Vectorworks(2024). It did not appear in the 2022 version. I skipped 2023 so can not tel if issue is present there.
