Impossible to load not well-formed GPX

I want to show on the map a GPX, which is being recorded right now. This GPX does not have closing tags, of course. So I have a "XML Parsing Error: no root element found".

The issue does not name a file, test, or parsing entry point. Reproduce loading a GPX without closing tags, then trace the GPX and XML loading path; done means an actively recorded, incomplete GPX can be shown on the map without the reported parsing error.

Written by the indexing model from the issue text.