I've run into this weird sizing issue for my windows form application when run. Now in the designer the program looks like This1 (can't upload more then 2 links so look in comments). However when I run it from visual studio it looks like This (notice how all the controls are closer together, the picture box is automatically wider and taller & the picturebox in tileset subform is larger).
When built and run outside of Visual Studio from the bin\debug
folder, it looks perfectly fine (as it would in Visual Studio like This). However I recently changed the build folder to one with a shorter path and when I now run from there the entire form looks much larger and the picturebox is again scaled in this2 (can't upload more then 2 links so look in comments).