Wt

When removing a marker and then immediately creating a new one, there is a possibility, that map won't be updated on client until page is reloaded.
This bug caused by comparing pointers, but not checking if unique_ptr exists, see this line.
In my case, unique_ptr, returned by removeMarker(), is being deleted, and then new marker is created and added, which may be located by the same address, so no changes are sent to the client.

Temporary workaround is to add new marker first and then remove the old one.