My first post on this forum, so apologies if it's in the wrong section.
When I make schematics, I use a lot of shapes that I created by combining rectangles. Each device in a schematic is just a collection of rectangles that are glued together. Even though each rectangle is perfectly aligned, on screen they seem to be misaligned. When I ungroup them, the X-position and width are exactly the same. And when I print, everything is fine and perfectly aligned.
So in the end it's no problem, but while working in Visio, it's a major annoyance, since I am forced to double check a lot when it looks bad. I have a feeling this was not always like this, but I have no clue what could have caused this behavior.
here's an example:

And here even stranger, 2 objects that are rendered differently, even though one is a copy of the other:

Does anybody have an idea where I can start looking?