Honestly speaking, there's no problem at all. Whatever it is recommend passed or interview or review required by junior officer..... Decision always depend on visa officer (Senior officer) , so nothing to worry just be positive
Recommend pass may go one way
Recommend interview can go either way
These are the combinations :
Review Required > Recommend pass > Passed
Review Required > Recommend pass > Recommend interview > Passed
Review Required > Recommend pass > Recommend interview > Fail
Review Required > Recommend interview > Passed
Review Required > Recommend interview > Fail
Review Required > Passed
Review Required > Failed
It means junior officer couldn't decide whether to recommend passed or interview you ,may be going for a program or anything not understandable by junior officer....therefore he refers to senior (Visa officer) to look into your file and decide both initial + final eligibility
Agreed, it's rare to get recommend interview but most of the time its a refusal, however it's still possible to get an approval.