I use Luminar 2018 on mac os and when I try to open a X-E3 raw file it only actually opens the jpeg side-car file that is embedded in the raw file, you can tell that Luminar is not actually using the raw file, by opening the develop filter, with a raw file the filter should be called Raw - Develop, when Luminar uses a jpeg file the filter is just called Develop. Also the photos app in mac os high sierra will not import X-E3 raw files, it says they are unsupported, high sierra will let you copy X-E3 raw files into it but its actual photo app will not import them even with high sierra 10.13.2. Luminar uses the Raw engine that comes with Mac OS. Lightroom will open the files because that uses its own raw engine, Mac OS raw engine so far does not support X-E3. https://support.apple.com/en-us/HT207972