Just noting the same, or similar, problem on macOS and Windows. I develop mainly on macOS, and use the Anchor Editor for all controls. I use a standard spacing, say 12 pixels, between controls. This works fine when compiling the project for Linux and Windows.
However, if I modify a Form while in Windows, the spacings change to, say, 10. I usually go back and revert them back to 12 on the Mac before final compiles. It would be nice to be able to lock the design time.