Welche Version Firefox ist freigegeben mit welcher Version Lotus Domino siehe Tabelle der IBM Quelle Link.
Auszug der IBM Supportseite:
Due to the increased rate at which vendors are now releasing new versions of their browsers, support for Firefox browser updates will only be maintained for the most recent shipping release of iNotes. iNotes product testing on new Firefox browser versions will continue at periodic intervals which may or may not align with the browser vendor's release schedule. Lotus iNotes 8.5.3 FP3 was tested and certified against Firefox 17. Should a problem be found when using a browser update with the most recent release of iNotes, we will make every effort to resolve the issue. To expedite this resolution it is our recommendation that you contact the browser vendor as well as IBM Support about the situation.