Indesign 15.0.1. and Dropbox

Hi! I have got a problem with the newest version of Indesign.

I am a editor of the magazine. All our issues are kept in dropbox. Several persons are sharing all th folders and it worked fine, unless I upgrated Id. Now as soon as I try to open a file from any folder DB starts synchronizing old files, and in this case Id stops responding. So the problem is that it is impossible to open an Id file when my dropbox is open. 

Does anyone know what the reason is and how to cope with it? 

Thank you!