Missing content in sprint and epic fields onHover

[nperdue]

I have JIRA integrated into Testrail with the following setup:

Under Defect tab:

; Please configure your JIRA connection below.
;
; Note: requires JIRA Cloud. You can use the 'JIRA REST'
; for Server versions or 'JIRA SOAP' defect plugin
; for older versions.
[connection]
address=************************
email=%jira_email%
token=%jira_token%

[push.fields]
summary=on
project=on
issuetype=on
component=on
assignee=on
priority=on
affects_version=on
sprint=on
epic=on
fix_version=off
estimate=off
labels=off
environment=off
parent=off
linktype=off
links=off
description=on
attachments=on

[hover.fields]
status=on
summary=on
project=on
issuetype=on
component=off
assignee=on
priority=on
affects_version=off
sprint=on
epic=on
fix_version=off
estimate=off
labels=off
environment=off
parent=off
linktype=off
links=off
description=off

Under the References Tab:

; Please configure your JIRA connection below.
;
; Note: requires JIRA Cloud. You can use the 'JIRA REST'
; for Server versions or 'JIRA SOAP' defect plugin
; for older versions.
[connection]
address=************************
email=%jira_email%
token=%jira_token%

[hover.fields]
status=on
summary=on
project=on
issuetype=on
component=off
assignee=on
priority=on
affects_version=off
sprint=on
epic=on
fix_version=off
estimate=off
labels=off
environment=off
parent=off
linktype=off
links=off
description=off

In testrail, when I mouse over a defect link for a JIRA issue that has a sprint and an epic, the sprint and epic do not appear on the mouseover popup in testrail. I can't seem to figure out why.