Frong map positioning when hidden in tab

Whenk accessing page and clicking “Местоположения” then you can see that map positioned wrongly(marker in the upper left corner if you drag map a little)
When you accesing same page but with /#location at the end of the url then map positioned right.
Can you assist me and help how can i display map right in the tab that is inactive.

The page I need help with: [log in to see the link]