This happens to me when I applied for PR but it seems that the way CIC processing applications change from time to time and then if you are unlucky to send the application in too early before they revise the operation manual then you can expect to wait very very long time. For example, when I sent the application in for Express Entry, it was just before they changed the processing manual, so everyone else was being processed in 6 months but for me it takes almost 14 months even though I sent the application before them. It is totally by luck, especially in eCAS many people see the status in Process and they just submitted like 2 weeks ago but those sent in application on the first few days after invitation was sent (26,27.28) do not see eCAS updated as In Process yet.