Drag and drop out of order with Synology File Station

[SilvainduCantal]

The drag-and-drop with Synology’s File Station has not been working for a few weeks, whereas it used to work before.

[SilvainduCantal]

Sorry. I'm French, with a poor english. I started to write my problem, and wanted to correct my post with, "Hello everybody", and "thanks for your help", but it seems it's impossible to correct after validation ... 

[SilvainduCantal]

It works without any problem with Edge and Chrome