Workflow time trigger Limitation

I got the next message from SF :

Hourly limit exceeded for processing workflow time triggers.

I read that the limitation for Enterprise Org is 1000 per hour. ( https://help.salesforce.com/articleView?id=workflow_limits.htm&type=5 )

When I entered to /services/data/v45.0/limits From the workbench I saw a very strange thing :

but when I went to Setup => Monitor => Time-Based Workflow, I saw 196 rows but none of them are Time-Dependent Workflow. Its Immediate Workflow.

So I don't really understand where it's coming from and why I see limit of 50 at Workbench while 1000 in SF Limitation Docs...

What I didn't understand here correctly?

Thanks!