With the retirement of NW.js in r450, exporting Construct 3 games to desktop has become more complex. This table should help determine which features used in your games are supported in the new export options. Holding all of these mismatches, caveats and special cases in our heads has become difficult, so we put together this table. Please feel free to ask for corrections or clarifications - I will be updating the table regularly.
https://toadlobe.github.io/c3-export-compatibility/
Unfortunately, despite the promise of the new exporters, much is left to be desired. After over 100 tests on four platforms, it is clear that the new exporters are not only missing significant functionality compared to NW.js, but also wildly differ in support. This may mean that the only reliable option for desktop publishing is staying on version r449.2 until these issues are addressed.