Good day emil6, welcome to forum btw.
Some feature that are not used by majority of users, are not perfect. I'm well aware of this. Support for KML files is one of them. Basic features works fine, but some advanced tasks like polygons suffer little bit.
Anyway to make it work better, I usually needs some helps with testing from others. So if you are not satisfied with how Locus handle KML files for now, we may try to improve it. Otherwise, take is as is, because currently no improvements in KML handling are planned.
So generally, what I need. Best is to simulate same problem. So if you may prepare me one tiny KML file that display in Google Earth and that also display in Locus, where I may clearly see one major problem, I will for sure check it and try to do something. Common steps are, that when one problem is solved, we may try to work on another ...
So, it depends on you

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