i was using the field: Epic.Link.Name for getting the name of the epic linked to the stories and it was working until today, but it stopped working. Now it returns empty epic name. The Epic.Link returns the epic key, but the names comes empty.
this is my JQL:
project in (DCK, TGK, DCPB) AND issuetype in (Story) AND fixversion in (Athena)
ORDER BY project ASC, "Epic Link" ASC
this are the list of field:
A Project.key
B Issue Type
C Key
D Summary
E Assignee
F Priority
G Status
H Created
I Updated
J Start date
K Due date
L Fix versions
M Story Points
N Epic Link
O Labels
P Status Category Changed
Q Epic Link.Name
R Program
S Program Increment
T Team

Do you know if you are having the same problem?
Thanks