Copied layer paths absolute even when set to relative, remain linked to original datasource

[MatparMcWolfie]

When exporting a project using the plugin, layers set to "copy" in cable export settings get an absolute path instead of a relative one. The geopackage are created in the target folder but the layers remain linked the original datasource.

This bug mainly happens when I export to a folder on the same drive as the main project, although I'm not exactly sure it's systematic.

You can find a copy of the main project with datasources as well as an example of an export for offline use here: https://drive.google.com/drive/folders/1byZuBSrtt-rSFKXHBJn0bk-Bhk7Nl9-y?usp=drive_link

QGIS 3.38.3
QFieldsync 4.10.1
Windos 11