How to use the Time ago view formatter when you have an end date collected in your date field?
This not will solve the "realy" problem with the bug, but is a way:

If you are in a early stage of your project and you don't want use the patch you can delete the field and create two separated fields:


initial_date
final_date


I test it and this works fine.

If you want, you can read this: When should I use collect an end date for a field, instead of using 2 separated date fields?

I will add an explanation in the question about this bug.