When creating a map I got a strange situation. Here are the steps:

create a new icon
in icon info, select host group
select host group elements
chose either automatic size or fixed size
click apply

the integer put in size become floats with a huge number of decimals. Then trying to save the map fails with the following error message:

Map save operation failed.
error: Incorrect value "199.55555534363" for int field "width". [CMap.update -> CMapElement.updateSelements -> DB.update -> DB.checkValueTypes]

Note that if I don't click on apply and just close the icon information panel, and save the map, all goes fine but then with no apply you can't change the 200x200 default size.