Thank you for your reply. I think my problem is not about initial pin. Because when I type a name of city, like Tilburg, the pin are pinned in the Tilburg, but the area of this city is not in the middle of the map we can see, as shown in the picture.
When I adjust the size of browser, it become what we are expected to have, as shown below.
I attached the lss. file. We are expected to show the map when people select "indicate it on the map". And one important thing is that my version after update is 6.5.13. What you mentioned similar map issues by my colleagues is solved in old version, which is smoothly. Since our department update the version, this map issue is not solved successfully.
And I find I cannot upload my video. The problem is described in previous messages. If it is not clear, please let me know.