Rect.VerticalCenter & Rect.HorizontalCenter oddities

Today I needed to manipulate a Rect object and tried to use the VerticalCenter and HorizontalCenter properties. It appears that the VerticalCenter or HorizontalCenter properties accept only half of the value assigned to them. If I assign 100, the debugger shows a value of 50.

I dug into the Xojo bug tracker and found this entry from ten years ago:

I am running Xojo Version 2020 Release 2.1 under Ubuntu 18.4 Linux.

It looks like this bug lives on…