Lightroom no longer synchronizes a folder with subfolders. If I add photos outside of Lightroom, it was able to find them and import them - I heard this was a bug - is it being fixed or is there a setting I amissing?
The workaround to this bug is to select "Show import dialog before importing". Please add your vote and details of your issue to this topic in the official Adobe feedback forum: Lightroom CC 2015.2 synchronize folder does not import new images unless show import dialog is active. Though Adobe says it is "in progress", that does not mean it will necessarily be fixed in the next release. Adding your vote and details will make it more likely Adobe will prioritize a fix, and it will keep you abreast of any updates to the issue.