import options are collapsed (CC2017)
when importing a file, the import options are collapsed, so you always have to check if the "import options" are marked. can reproduce. should be uncollapsed like the versions before.
Please update InDesign to the latest version, InDesign CC 2018 (13.0) for the fix of the issue.
Del S commented
I've encountered this as well. It seems to have to do with the Mac OS Sierra, because designers in my company running earlier operating systems with CC2017 still have the uncollapsed import options.