The actual rendering issue MAY be caused what we call transparency acne, but it was difficult to see on your screenshot, which is why I also asked you if it was different if you tried a 5k square export instead of a 10k. Basically, TA can happen on entities with an edge fade or bevel effect where some of the colors of the fill are identical to the background below them. This can cause "holes" in the texture at the points where they are identical, and the edge fade effect then extends these holes, sometimes to the point of the original texture almost disappearing. If it is TA, one way to work around it is to put another entity (a copy of the top one, with another fill, such as a solid color) on a sheet sandwiched between the two holding the entities.

Tools menu -> Options -> Pick cursor aparture

And after gaming with you for a while, they became even more careful? :)

You can include them with the code :BUTTON_NAME: and |BUTTON_NAME| (With and without text)

The list is here.

That large scale bar is actually correct, it's just that it is a bit larger than you want.

That particular scale bar is 50 map units large, so at scale 1, it will fill the entire map width. But you can use that knowledge to make it the size you want it. Because if it is 50 at scale one, well, then it will be 5 at scale 0.1.

I might not have been spesific enough when I said scale bars should always be placed at scale 1. What I really should have said is "don't apply metric conversion to the scale for scale bars.". Placing it at 0.3048 will never work. But sensible scaling based on 1 as the default value does, so using 0.1 as I described above, it will be one tenth of it's "intended" size, which should work fine for your map. Or maybe you want 0.2 (which then results in a 10m long scalebar)