Rotating viewport mirrors block?

I have a weird issue with blocks in a rotated view.
When I insert my block in a empty rhino document it shows up correctly:

But once I rotate the view by 90 degrees the block doesn’t only rotate, but it also mirrors:


Why? Is that meant to happen?

Hi Jasper -

That’s the effect of drawing text to “read forward”.

In the image above, the viewport to the left is the regular “Top” viewport and the one to the right has the camera rotated 90°.

When I turn off `Text reads forward when viewed from behind", you can see that the result is probably more in line with what you need: