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Datasource Maps

Hello guys,

Does anyone have a hard time to shows markers correctly on Maps?
My data source lists 5 items ( all with the correct address) but sometimes it shows only a few markers.

Normally the first time the page is loaded it shows all markers(fig 1), I search to be available only four items on the list and it displays correctly, when I search again for five items, the maps display only the current four markers but the data source says the map list has 5 items(fig 2 and 3). Does anyone know how to fix this?
fig - 1
help3

fig - 2 and 3


help2