Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
SYMPTOM:
In Strategy Library 10.10, using Internet Explorer 11 to export any dossier to PDF via option "Export to PDF", tooltip appears when hovering on options in PDF settings window (note that the issue is IE specific, it does not happen in other browser such as Chrome):

CAUSE:
This is a known issue in Strategy Library 10.10
ACTION:
This issue has been fixed in Strategy 10.11, upgrade to this version to take advantage of the fix.
Article Reference Number: KB440529