Setting the «Zoom level» parameter for a map has no effect – the zoom level is set automatically to make all existing addresses visible. («Fit map on markers change» is set to «off», and my addresses are not loaded by a query loop.)
Example: My map contains 2 addresses nearby. The map is automatically set to zoom level 18. When I set «Zoom level» to 16 (because I want to show a bit more of the surrounding area), nothing happens.
Current workaround: Set «Zoom control» to «on» and «Zoom level (Max)» to the desired zoom level (16 in my case).