Currently I am experiencing problems in the Web Vault:
When editing and saving entries, then the save animation is shown forever (here changing a folder name):
On the Official Bitwarden Status Page these problems are also confirmed:
We’re still monitoring very closely - but it should be up and running normally as of now 
I can confirm this, had the same issue about 2 h ago.
I changed several entries and had saving issues at about every 2nd one.
Closing and re-opening of each entry solved the issue for each entry, then mostly it was saved instantly.