My python app an example is at simplifyconnections has not been revised in years but the map no longer shows the map pins. On a desktop computer, mouse hovering displays individual map pin names but the pins are invisible now; so you can see that the pins still exist. You can observe the phenomenon my clicking on the link provided and then hovering in the DENSELY POPULATED map regions that appear in the attached snapshot.
If you want to experiment I would appreciate your using this slightly different link. For example, in the address field, add an address and then try hovering over it.
(About a month ago I first noticed a problem and then it was even worse: the whole map canvas was invisible — only the text and input fields appeared. This is the first time I have been able to look again into the problem.)
Has the map app or python been updated or something?