Weird serious problem with shared folders in personal Onedrive after windows 10 update.

Hi there,

Last week my PC got updates from MS for windows 10 , and after the reboot my Onedrive local client started doing weird things deleting folders and renaming them to names with -COMPUTERNAME behind them.

My setup is as follows: 

• I'm logged on to my own Onedrive
• In my Onedrive I have shared folders with data that other family members in a family subsciption shared with me. There is a lot of data in them, some have 660Gb of pics and videos.
• I added those shared folders to my Onedrive, so I can access them in my own explorer without logging on to another account.
• This setup has been working fine for years, up until this MS update...

I noticed after the reboot that my Onedrive Personal client was deleting a lot of folders from the local Onedrive folder on my harddrive, but only the folders that have the shared offline data, they were in the recycing BIN. 

I tried to re-connect the Onedrive but nothing changed, the online view in my Onedrive was still intact , including the shared folders from other Onedrives, but locally these were gone. So at that point I saw a different file structure online compared to the one in my own Explorer.

I then tried to restore them from the recycling bin, only to find out that Onedrive would rename them to 'ORIGINALNAME-WIN10' where WIN10 is my computername. It then started uploading all this data AGAIN to my online )storage, the 'shared (Gedeeld) folders were copied into my own drive with the label 'private' behind it, but that is absolutely not what should happen, my own drive would have been full within a day if I didn't break off this operation. Here you can see a screenshot of what was happening, while it was still 'syncing':

I tried re-installing and re-connecting the Onedrive client, and also removing all the extra copies of the folders online AND offline, hoping it would resync the whole thing from the Original online shared folders.  The shared folders just don't turn up anymore in my local view.  Instead the Onedrive client started renaming even more shared folders that seemed untouched before, and uploading the contents to my own Onedrive....

So to make it absolutely clear what happened: the shared folders that were only in the Cloud didn't turn up locally anymore, the shared folders that were on both sides were renamed locally and copied back to the cloud as a new private copy folder (as you can see in the screenshot). 

Did MS change something with the last updates that forces shared data to actually be taking up space in your own Onedrive, where this was not the case before? 

Or is this just something that went corrupt on my own PC and can I fix it somehow?

I can't imagine them changing something that has such an impact without any warning since it causes a lot of trouble for people using shared folders and also a LOT of network traffic if everyone with shared folders gets into these issues....

I hope some real expert on Onedrive can tell me what is going on, and esp. how to fix it?

To be honest, this seems a PRETTY SERIOUS issue if other have it too... ;)

Marcel