I seem to have issues with using the function to automatically expand a host group into individual elements in a map in Zabbix 3.0.4

No matter the size of the map or area I specify, it seems like it insists on subtracting some small amount from the pixel size so it is no longer an integer and then of course it nags me that the value is not an integer. This was not an issues last I did this in the Zabbix 2.4 series...

Current message with a 1600x800 map:
Map update failed.
error: Incorrect value "1599.55556" for int field "width".

I originally posted this on the forums, and other people experience it too, on 2.4.7 and 2.4.8 at least. These versions are not show in Affects Version(s), though.

Thread on the forum:
https://www.zabbix.com/forum/showthread.php?t=55227