i've just been saving (via /save as) a geopackage in qis (2.18.11) - which worked pretty fine. the output layer CRS information is correctly identified as WGS84 includig EPSG code (4326).
the same geopackage in arcgis 10.4 (and 10.5) is identified as a WGS84 but EPSG information is missing - thus the feature class properties are set to "Custom" by arcgis. as a consequence the relavant information for arcgis' semi-automatic transformation is missing, which results in serious troubles with projection on the fly for any kind of non WGS84-based projection. as far as i could figure out the CRS settings of the geopackage can't be changed within arcgis.
- a way to verify the CRS-settings of the geopackage (with an external tool) ?
- a way to edit that settings with any kind of tool ?
- or a known workaround for arcgis ?