If a diagram contains hidden metric attachments it is possible that the diagram will be scaled incorrectly. This appears to be due to the diagram size being incorrectly calculated, although I have not verified the specific code causing this issue. If the diagram is scaled incorrectly it also causes diagram hot spots (drill down, attachment logos etc) to appear in the incorrect place on the diagram.
Issue/Introduction
Alignment issues when using classic mode in web client.
Resolution
This is a known defect and is currently under investigation. Until a fix has been developed one of the following can be done to resolve this:
Enable display of all metric attachments on the diagram.
Delete the metrics that are not currently displayed.
Change the diagram layout so that all metrics (even the hidden ones) fall within the bounds of the other diagram objects.