[bug] Can't edit dashboard/Dashboard doesn't save correctly

What's the problem?

I tried setting up my dashboard, after adding several subreddit widgets the "add" button doesn't work anymore and when I refresh the dashboard only the first 2 widgets are there and I can't change anything (I can't add new widgets, and while I can click on the X to remove the first 2 widgets, when I refresh they are back)

What other browser extensions are installed?
Privacy Badger (already tried to disable it)

ublock origin (already tried to disable it)

I use other extensions but they don't matter (twitch related, WOT etc these have no influence on reddit)

Did you read the known issues and search r/RESissues?
Yes and I saw some other people having the same problem without getting an answer

• Night mode: true
• RES Version: 4.6.0
• Browser: Chrome
• Browser Version: 50
• Cookies Enabled: true
• Platform: Windows