I initially noticed this trying to mod the airport icon to the left so it didn't overlap the units as much, but it happens with the default airport icon as well.
Screenshots taken in the CFNA scenario with 4.0.1.22, 125% scaling in win10, and all TOAW scaling settings at default values.
The attached image has the huge, normal, and small maps first with the entire Solum airport visible, and then with the corner cut off after sending a movement cursor into the lower left hex. It's most noticeable at the normal scale, but all 3 are showing a few pixels of clipping.
