Problem importing geojson file (and any other type)

[Cristian-wp]

Hello, I have load a dxf file in QGIS, then I exported it as geojson.
I can import the file in my umap project, but after a reload I get all the line ruined by simplify. I have already disable it, but I always get the same result.
How can I solve this problem?

Afrer import:

After reload:

[davidbgk]

The issue template is here for a good reason, we need a map or at least the uploaded file to be able to reproduce 🤷