Recently my drag and drop to LR isn't working anymore. I'm using the online ver of LR Classic.
There may be a disconnect here but LR Classic is specifically
not the "online" version. So, when you say "the online ver of LR Classic" it's not clear which one you mean.
For anyone using the cloud-enabled version, that is "Lightroom CC," and drag-and-drop to the
LR CC icon will NOT work on any platform currently. The best way to import photos from PM into
Lightroom CC (not Classic) is to open the Import dialog in CC and drag files from PM into that File Chooser dialog. That has worked pretty well for me so far.
Mick