No Check Out option in new OneDrive Web UI
There is no place in the new OneDrive UI to Check Out a file. In the old UI (which you can still use), you can reveal the Ribbon, and from the Ribbon, you can select Check Out. The only way to Check Out a file is inside of a locally installed copy of Office, or using the old UI. Check Out should be an option from the ellipsis (3 dots) or right click on a file. or, bring back the Ribbon - I liked it.
Agreed, this has become a pain for our office. They need to bring back the check out feature.
Why do you have the File Check in option on the SharePoint team site when the new version of one drive clearly does not support it?
I hope Microsoft are not planning on doing something stupid like phasing out the older version of one drive leaving us no option to use check in feature. This was used as a major selling point of office 365 and need to be sorted ASAP.