Description of path

What property value "Action by Click" for path?

If enabled - disable "Loading content data dynamically" in map details on Advanced settings

It is set to: Open Link in new page

"Loading content data dynamically" was set to No

You select Open link, but not define it. Therefore default popup is opened.
Just set to Open popup and you'll get popup as you wish

I have now changed it to Open Popup, but still the same

I still have this problem any suggestions?

Hi
I checked more details.
Today KML (internal parser) and GPX (internal parser) use Title and Description, which stored in file. It doesn't use path settings (action by click, title, description, addition HTML text and hover text).
Therefore popup and tooltip content you can see only from file.

I think in future I can add ability to manage it. I hope I will try to implement it on next week (if I would have free time).