Something new has cropped up in the mapping sites which I have just noticed - not a mapping error as such, but a formatting issue.
With the latest Google Maps API version, used by the SMP and many other sites, the standard map controls have very recently (in the past couple of hours!) suddenly been increased in size. This change has been introduced by Google without prior notice, in an effort to accommodate users of mapping sites who access those sites using mobile devices of various sorts featuring touch-screens. The larger standard controls are apparently easier to activate with the fingers, which is no bad thing in itself. However, the SMP was - rightly or wrongly - never designed to be used on small devices like mobile phones, so there is little sense in keeping such changes in the SMP.
This change has the unfortunate knock-on effect of breaking the conformity between the standard map controls and those created by developers, of which there are several in the SMP mapping pages. A solution to this issue is available to the SMP, but involves a combination of writing patches to developer code and extra styling rules. This solution is now in the process of being tested and should be implemented within the next few days.